Sr Examen

Otras calculadoras

Integral de x^2/(x^2+1)^4 dx

Límites de integración:

interior superior
v

Gráfico:

interior superior

Definida a trozos:

Solución

Ha introducido [src]
  1             
  /             
 |              
 |       2      
 |      x       
 |  --------- dx
 |          4   
 |  / 2    \    
 |  \x  + 1/    
 |              
/               
0               
$$\int\limits_{0}^{1} \frac{x^{2}}{\left(x^{2} + 1\right)^{4}}\, dx$$
Integral(x^2/(x^2 + 1)^4, (x, 0, 1))
Solución detallada
  1. Hay varias maneras de calcular esta integral.

    Método #1

    1. Vuelva a escribir el integrando:

    2. Integramos término a término:

        TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=cos(_theta)**4, substep=RewriteRule(rewritten=(cos(2*_theta)/2 + 1/2)**2, substep=AlternativeRule(alternatives=[RewriteRule(rewritten=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, substep=AddRule(substeps=[ConstantTimesRule(constant=1/4, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=cos(2*_theta)**2/4, symbol=_theta), ConstantTimesRule(constant=1/2, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=cos(2*_theta)/2, symbol=_theta), ConstantRule(constant=1/4, context=1/4, symbol=_theta)], context=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta), RewriteRule(rewritten=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, substep=AddRule(substeps=[ConstantTimesRule(constant=1/4, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=cos(2*_theta)**2/4, symbol=_theta), ConstantTimesRule(constant=1/2, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=cos(2*_theta)/2, symbol=_theta), ConstantRule(constant=1/4, context=1/4, symbol=_theta)], context=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta)], context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta), context=cos(_theta)**4, symbol=_theta), restriction=True, context=(x**2 + 1)**(-3), symbol=x)

      1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=cos(_theta)**6, substep=RewriteRule(rewritten=(cos(2*_theta)/2 + 1/2)**3, substep=AlternativeRule(alternatives=[RewriteRule(rewritten=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, substep=AddRule(substeps=[ConstantTimesRule(constant=1/8, other=cos(2*_theta)**3, substep=RewriteRule(rewritten=(1 - sin(2*_theta)**2)*cos(2*_theta), substep=AlternativeRule(alternatives=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1, substep=AddRule(substeps=[ConstantRule(constant=1/2, context=1/2, symbol=_u), ConstantTimesRule(constant=-1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=-_u**2/2, symbol=_u)], context=1/2 - _u**2/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1, substep=AddRule(substeps=[ConstantTimesRule(constant=-1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=-sin(_u)**2*cos(_u)/2, symbol=_u), ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u)/2, symbol=_u)], context=-sin(_u)**2*cos(_u)/2 + cos(_u)/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), context=cos(2*_theta)**3, symbol=_theta), context=cos(2*_theta)**3/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=3*cos(2*_theta)**2/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=3*cos(2*_theta)/8, symbol=_theta), ConstantRule(constant=1/8, context=1/8, symbol=_theta)], context=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta), RewriteRule(rewritten=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, substep=AddRule(substeps=[ConstantTimesRule(constant=1/8, other=cos(2*_theta)**3, substep=RewriteRule(rewritten=(1 - sin(2*_theta)**2)*cos(2*_theta), substep=AlternativeRule(alternatives=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1, substep=AddRule(substeps=[ConstantRule(constant=1/2, context=1/2, symbol=_u), ConstantTimesRule(constant=-1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=-_u**2/2, symbol=_u)], context=1/2 - _u**2/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1, substep=AddRule(substeps=[ConstantTimesRule(constant=-1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=-sin(_u)**2*cos(_u)/2, symbol=_u), ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u)/2, symbol=_u)], context=-sin(_u)**2*cos(_u)/2 + cos(_u)/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), context=cos(2*_theta)**3, symbol=_theta), context=cos(2*_theta)**3/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=3*cos(2*_theta)**2/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=3*cos(2*_theta)/8, symbol=_theta), ConstantRule(constant=1/8, context=1/8, symbol=_theta)], context=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta)], context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta), context=cos(_theta)**6, symbol=_theta), restriction=True, context=(x**2 + 1)**(-4), symbol=x)

        Por lo tanto, el resultado es:

      El resultado es:

    Método #2

    1. Vuelva a escribir el integrando:

    2. Vuelva a escribir el integrando:

    3. Integramos término a término:

        TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=cos(_theta)**4, substep=RewriteRule(rewritten=(cos(2*_theta)/2 + 1/2)**2, substep=AlternativeRule(alternatives=[RewriteRule(rewritten=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, substep=AddRule(substeps=[ConstantTimesRule(constant=1/4, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=cos(2*_theta)**2/4, symbol=_theta), ConstantTimesRule(constant=1/2, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=cos(2*_theta)/2, symbol=_theta), ConstantRule(constant=1/4, context=1/4, symbol=_theta)], context=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta), RewriteRule(rewritten=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, substep=AddRule(substeps=[ConstantTimesRule(constant=1/4, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=cos(2*_theta)**2/4, symbol=_theta), ConstantTimesRule(constant=1/2, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=cos(2*_theta)/2, symbol=_theta), ConstantRule(constant=1/4, context=1/4, symbol=_theta)], context=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta)], context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta), context=cos(_theta)**4, symbol=_theta), restriction=True, context=(x**2 + 1)**(-3), symbol=x)

      1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=cos(_theta)**6, substep=RewriteRule(rewritten=(cos(2*_theta)/2 + 1/2)**3, substep=AlternativeRule(alternatives=[RewriteRule(rewritten=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, substep=AddRule(substeps=[ConstantTimesRule(constant=1/8, other=cos(2*_theta)**3, substep=RewriteRule(rewritten=(1 - sin(2*_theta)**2)*cos(2*_theta), substep=AlternativeRule(alternatives=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1, substep=AddRule(substeps=[ConstantRule(constant=1/2, context=1/2, symbol=_u), ConstantTimesRule(constant=-1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=-_u**2/2, symbol=_u)], context=1/2 - _u**2/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1, substep=AddRule(substeps=[ConstantTimesRule(constant=-1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=-sin(_u)**2*cos(_u)/2, symbol=_u), ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u)/2, symbol=_u)], context=-sin(_u)**2*cos(_u)/2 + cos(_u)/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), context=cos(2*_theta)**3, symbol=_theta), context=cos(2*_theta)**3/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=3*cos(2*_theta)**2/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=3*cos(2*_theta)/8, symbol=_theta), ConstantRule(constant=1/8, context=1/8, symbol=_theta)], context=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta), RewriteRule(rewritten=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, substep=AddRule(substeps=[ConstantTimesRule(constant=1/8, other=cos(2*_theta)**3, substep=RewriteRule(rewritten=(1 - sin(2*_theta)**2)*cos(2*_theta), substep=AlternativeRule(alternatives=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1, substep=AddRule(substeps=[ConstantRule(constant=1/2, context=1/2, symbol=_u), ConstantTimesRule(constant=-1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=-_u**2/2, symbol=_u)], context=1/2 - _u**2/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1, substep=AddRule(substeps=[ConstantTimesRule(constant=-1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=-sin(_u)**2*cos(_u)/2, symbol=_u), ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u)/2, symbol=_u)], context=-sin(_u)**2*cos(_u)/2 + cos(_u)/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), context=cos(2*_theta)**3, symbol=_theta), context=cos(2*_theta)**3/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=3*cos(2*_theta)**2/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=3*cos(2*_theta)/8, symbol=_theta), ConstantRule(constant=1/8, context=1/8, symbol=_theta)], context=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta)], context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta), context=cos(_theta)**6, symbol=_theta), restriction=True, context=(x**2 + 1)**(-4), symbol=x)

        Por lo tanto, el resultado es:

      El resultado es:

    Método #3

    1. Vuelva a escribir el integrando:

    2. Vuelva a escribir el integrando:

    3. Integramos término a término:

        TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=cos(_theta)**4, substep=RewriteRule(rewritten=(cos(2*_theta)/2 + 1/2)**2, substep=AlternativeRule(alternatives=[RewriteRule(rewritten=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, substep=AddRule(substeps=[ConstantTimesRule(constant=1/4, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=cos(2*_theta)**2/4, symbol=_theta), ConstantTimesRule(constant=1/2, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=cos(2*_theta)/2, symbol=_theta), ConstantRule(constant=1/4, context=1/4, symbol=_theta)], context=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta), RewriteRule(rewritten=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, substep=AddRule(substeps=[ConstantTimesRule(constant=1/4, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=cos(2*_theta)**2/4, symbol=_theta), ConstantTimesRule(constant=1/2, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=cos(2*_theta)/2, symbol=_theta), ConstantRule(constant=1/4, context=1/4, symbol=_theta)], context=cos(2*_theta)**2/4 + cos(2*_theta)/2 + 1/4, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta)], context=(cos(2*_theta)/2 + 1/2)**2, symbol=_theta), context=cos(_theta)**4, symbol=_theta), restriction=True, context=(x**2 + 1)**(-3), symbol=x)

      1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=cos(_theta)**6, substep=RewriteRule(rewritten=(cos(2*_theta)/2 + 1/2)**3, substep=AlternativeRule(alternatives=[RewriteRule(rewritten=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, substep=AddRule(substeps=[ConstantTimesRule(constant=1/8, other=cos(2*_theta)**3, substep=RewriteRule(rewritten=(1 - sin(2*_theta)**2)*cos(2*_theta), substep=AlternativeRule(alternatives=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1, substep=AddRule(substeps=[ConstantRule(constant=1/2, context=1/2, symbol=_u), ConstantTimesRule(constant=-1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=-_u**2/2, symbol=_u)], context=1/2 - _u**2/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1, substep=AddRule(substeps=[ConstantTimesRule(constant=-1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=-sin(_u)**2*cos(_u)/2, symbol=_u), ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u)/2, symbol=_u)], context=-sin(_u)**2*cos(_u)/2 + cos(_u)/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), context=cos(2*_theta)**3, symbol=_theta), context=cos(2*_theta)**3/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=3*cos(2*_theta)**2/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=3*cos(2*_theta)/8, symbol=_theta), ConstantRule(constant=1/8, context=1/8, symbol=_theta)], context=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta), RewriteRule(rewritten=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, substep=AddRule(substeps=[ConstantTimesRule(constant=1/8, other=cos(2*_theta)**3, substep=RewriteRule(rewritten=(1 - sin(2*_theta)**2)*cos(2*_theta), substep=AlternativeRule(alternatives=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1, substep=AddRule(substeps=[ConstantRule(constant=1/2, context=1/2, symbol=_u), ConstantTimesRule(constant=-1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=-_u**2/2, symbol=_u)], context=1/2 - _u**2/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1, substep=AddRule(substeps=[ConstantTimesRule(constant=-1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=-sin(_u)**2*cos(_u)/2, symbol=_u), ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u)/2, symbol=_u)], context=-sin(_u)**2*cos(_u)/2 + cos(_u)/2, symbol=_u), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), RewriteRule(rewritten=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=sin(2*_theta)**2*cos(2*_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(2*_theta), constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u**2, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=_u**2, symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=sin(_u)**2*cos(_u), substep=URule(u_var=_u, u_func=sin(_u), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(_u)**2*cos(_u), symbol=_u), context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta)], context=sin(2*_theta)**2*cos(2*_theta), symbol=_theta), context=-sin(2*_theta)**2*cos(2*_theta), symbol=_theta), URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta)], context=-sin(2*_theta)**2*cos(2*_theta) + cos(2*_theta), symbol=_theta), context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta)], context=(1 - sin(2*_theta)**2)*cos(2*_theta), symbol=_theta), context=cos(2*_theta)**3, symbol=_theta), context=cos(2*_theta)**3/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta)**2, substep=RewriteRule(rewritten=cos(4*_theta)/2 + 1/2, substep=AddRule(substeps=[ConstantTimesRule(constant=1/2, other=cos(4*_theta), substep=URule(u_var=_u, u_func=4*_theta, constant=1/4, substep=ConstantTimesRule(constant=1/4, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(4*_theta), symbol=_theta), context=cos(4*_theta)/2, symbol=_theta), ConstantRule(constant=1/2, context=1/2, symbol=_theta)], context=cos(4*_theta)/2 + 1/2, symbol=_theta), context=cos(2*_theta)**2, symbol=_theta), context=3*cos(2*_theta)**2/8, symbol=_theta), ConstantTimesRule(constant=3/8, other=cos(2*_theta), substep=URule(u_var=_u, u_func=2*_theta, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=cos(_u), substep=TrigRule(func='cos', arg=_u, context=cos(_u), symbol=_u), context=cos(_u), symbol=_u), context=cos(2*_theta), symbol=_theta), context=3*cos(2*_theta)/8, symbol=_theta), ConstantRule(constant=1/8, context=1/8, symbol=_theta)], context=cos(2*_theta)**3/8 + 3*cos(2*_theta)**2/8 + 3*cos(2*_theta)/8 + 1/8, symbol=_theta), context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta)], context=(cos(2*_theta)/2 + 1/2)**3, symbol=_theta), context=cos(_theta)**6, symbol=_theta), restriction=True, context=(x**2 + 1)**(-4), symbol=x)

        Por lo tanto, el resultado es:

      El resultado es:

  2. Ahora simplificar:

  3. Añadimos la constante de integración:


Respuesta:

Respuesta (Indefinida) [src]
  /                                                       
 |                                                        
 |      2                             3          /     2\ 
 |     x              atan(x)        x         x*\1 - x / 
 | --------- dx = C + ------- + ----------- - ------------
 |         4             16               3              2
 | / 2    \                       /     2\       /     2\ 
 | \x  + 1/                     6*\1 + x /    16*\1 + x / 
 |                                                        
/                                                         
$$\int \frac{x^{2}}{\left(x^{2} + 1\right)^{4}}\, dx = C + \frac{x^{3}}{6 \left(x^{2} + 1\right)^{3}} - \frac{x \left(1 - x^{2}\right)}{16 \left(x^{2} + 1\right)^{2}} + \frac{\operatorname{atan}{\left(x \right)}}{16}$$
Gráfica
Respuesta [src]
1    pi
-- + --
48   64
$$\frac{1}{48} + \frac{\pi}{64}$$
=
=
1    pi
-- + --
48   64
$$\frac{1}{48} + \frac{\pi}{64}$$
1/48 + pi/64
Respuesta numérica [src]
0.0699207185456738
0.0699207185456738

    Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.