1 / | | 1 | -------------- dx | ________ | 4 / 2 | x *\/ 1 + x | / 0
Integral(1/(x^4*sqrt(1 + x^2)), (x, 0, 1))
TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=cos(_theta)**3/sin(_theta)**4, substep=RewriteRule(rewritten=(1 - sin(_theta)**2)*cos(_theta)/sin(_theta)**4, substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(_theta), constant=-1, substep=ConstantTimesRule(constant=-1, other=(_u**2 - 1)/_u**4, substep=RewriteRule(rewritten=_u**(-2) - 1/_u**4, substep=AddRule(substeps=[PowerRule(base=_u, exp=-2, context=_u**(-2), symbol=_u), ConstantTimesRule(constant=-1, other=_u**(-4), substep=PowerRule(base=_u, exp=-4, context=_u**(-4), symbol=_u), context=-1/_u**4, symbol=_u)], context=_u**(-2) - 1/_u**4, symbol=_u), context=(_u**2 - 1)/_u**4, symbol=_u), context=(_u**2 - 1)/_u**4, symbol=_u), context=(1 - sin(_theta)**2)*cos(_theta)/sin(_theta)**4, symbol=_theta), RewriteRule(rewritten=-(sin(_theta)**2*cos(_theta) - cos(_theta))/sin(_theta)**4, substep=ConstantTimesRule(constant=-1, other=(sin(_theta)**2*cos(_theta) - cos(_theta))/sin(_theta)**4, substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sin(_theta), constant=1, substep=RewriteRule(rewritten=_u**(-2) - 1/_u**4, substep=AddRule(substeps=[PowerRule(base=_u, exp=-2, context=_u**(-2), symbol=_u), ConstantTimesRule(constant=-1, other=_u**(-4), substep=PowerRule(base=_u, exp=-4, context=_u**(-4), symbol=_u), context=-1/_u**4, symbol=_u)], context=_u**(-2) - 1/_u**4, symbol=_u), context=(_u**2 - 1)/_u**4, symbol=_u), context=(sin(_theta)**2*cos(_theta) - cos(_theta))/sin(_theta)**4, symbol=_theta), RewriteRule(rewritten=cos(_theta)/sin(_theta)**2 - cos(_theta)/sin(_theta)**4, substep=AddRule(substeps=[URule(u_var=_u, u_func=sin(_theta), constant=1, substep=PowerRule(base=_u, exp=-2, context=_u**(-2), symbol=_u), context=cos(_theta)/sin(_theta)**2, symbol=_theta), ConstantTimesRule(constant=-1, other=cos(_theta)/sin(_theta)**4, substep=URule(u_var=_u, u_func=sin(_theta), constant=1, substep=PowerRule(base=_u, exp=-4, context=_u**(-4), symbol=_u), context=cos(_theta)/sin(_theta)**4, symbol=_theta), context=-cos(_theta)/sin(_theta)**4, symbol=_theta)], context=cos(_theta)/sin(_theta)**2 - cos(_theta)/sin(_theta)**4, symbol=_theta), context=(sin(_theta)**2*cos(_theta) - cos(_theta))/sin(_theta)**4, symbol=_theta)], context=(sin(_theta)**2*cos(_theta) - cos(_theta))/sin(_theta)**4, symbol=_theta), context=-(sin(_theta)**2*cos(_theta) - cos(_theta))/sin(_theta)**4, symbol=_theta), context=(1 - sin(_theta)**2)*cos(_theta)/sin(_theta)**4, symbol=_theta), RewriteRule(rewritten=-cos(_theta)/sin(_theta)**2 + cos(_theta)/sin(_theta)**4, substep=AddRule(substeps=[ConstantTimesRule(constant=-1, other=cos(_theta)/sin(_theta)**2, substep=URule(u_var=_u, u_func=sin(_theta), constant=1, substep=PowerRule(base=_u, exp=-2, context=_u**(-2), symbol=_u), context=cos(_theta)/sin(_theta)**2, symbol=_theta), context=-cos(_theta)/sin(_theta)**2, symbol=_theta), URule(u_var=_u, u_func=sin(_theta), constant=1, substep=PowerRule(base=_u, exp=-4, context=_u**(-4), symbol=_u), context=cos(_theta)/sin(_theta)**4, symbol=_theta)], context=-cos(_theta)/sin(_theta)**2 + cos(_theta)/sin(_theta)**4, symbol=_theta), context=(1 - sin(_theta)**2)*cos(_theta)/sin(_theta)**4, symbol=_theta)], context=(1 - sin(_theta)**2)*cos(_theta)/sin(_theta)**4, symbol=_theta), context=cos(_theta)**3/sin(_theta)**4, symbol=_theta), restriction=True, context=1/(x**4*sqrt(x**2 + 1)), symbol=x)
Ahora simplificar:
Añadimos la constante de integración:
Respuesta:
/ ________ 3/2 | / 2 / 2\ | 1 \/ 1 + x \1 + x / | -------------- dx = C + ----------- - ----------- | ________ x 3 | 4 / 2 3*x | x *\/ 1 + x | /
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.