1 / | | 3 | _________ | / 2 4 | / x + x | / ------- dx | / 2 | \/ 1 + x | / 0
Integral((sqrt((x^2 + x^4)/(1 + x^2)))^3, (x, 0, 1))
Vuelva a escribir el integrando:
Integramos término a término:
Vuelva a escribir el integrando:
TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=tan(_theta)**5, substep=RewriteRule(rewritten=(sec(_theta)**2 - 1)**2*tan(_theta), substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sec(_theta)**2, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=(_u**2 - 2*_u + 1)/_u, substep=RewriteRule(rewritten=_u - 2 + 1/_u, substep=AddRule(substeps=[PowerRule(base=_u, exp=1, context=_u, symbol=_u), ConstantRule(constant=-2, context=-2, symbol=_u), ReciprocalRule(func=_u, context=1/_u, symbol=_u)], context=_u - 2 + 1/_u, symbol=_u), context=(_u**2 - 2*_u + 1)/_u, symbol=_u), context=(_u**2 - 2*_u + 1)/_u, symbol=_u), context=(sec(_theta)**2 - 1)**2*tan(_theta), symbol=_theta), RewriteRule(rewritten=tan(_theta)*sec(_theta)**4 - 2*tan(_theta)*sec(_theta)**2 + tan(_theta), substep=AddRule(substeps=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sec(_theta), constant=1, substep=PowerRule(base=_u, exp=3, context=_u**3, symbol=_u), context=tan(_theta)*sec(_theta)**4, symbol=_theta), URule(u_var=_u, u_func=sec(_theta)**2, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**4, symbol=_theta)], context=tan(_theta)*sec(_theta)**4, symbol=_theta), ConstantTimesRule(constant=-2, other=tan(_theta)*sec(_theta)**2, substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sec(_theta), constant=1, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**2, symbol=_theta), URule(u_var=_u, u_func=tan(_theta), constant=1, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**2, symbol=_theta)], context=tan(_theta)*sec(_theta)**2, symbol=_theta), context=-2*tan(_theta)*sec(_theta)**2, symbol=_theta), RewriteRule(rewritten=sin(_theta)/cos(_theta), substep=URule(u_var=_u, u_func=cos(_theta), constant=-1, substep=ConstantTimesRule(constant=-1, other=1/_u, substep=ReciprocalRule(func=_u, context=1/_u, symbol=_u), context=1/_u, symbol=_u), context=sin(_theta)/cos(_theta), symbol=_theta), context=tan(_theta), symbol=_theta)], context=tan(_theta)*sec(_theta)**4 - 2*tan(_theta)*sec(_theta)**2 + tan(_theta), symbol=_theta), context=(sec(_theta)**2 - 1)**2*tan(_theta), symbol=_theta), RewriteRule(rewritten=tan(_theta)*sec(_theta)**4 - 2*tan(_theta)*sec(_theta)**2 + tan(_theta), substep=AddRule(substeps=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sec(_theta), constant=1, substep=PowerRule(base=_u, exp=3, context=_u**3, symbol=_u), context=tan(_theta)*sec(_theta)**4, symbol=_theta), URule(u_var=_u, u_func=sec(_theta)**2, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=_u, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**4, symbol=_theta)], context=tan(_theta)*sec(_theta)**4, symbol=_theta), ConstantTimesRule(constant=-2, other=tan(_theta)*sec(_theta)**2, substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=sec(_theta), constant=1, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**2, symbol=_theta), URule(u_var=_u, u_func=tan(_theta), constant=1, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**2, symbol=_theta)], context=tan(_theta)*sec(_theta)**2, symbol=_theta), context=-2*tan(_theta)*sec(_theta)**2, symbol=_theta), RewriteRule(rewritten=sin(_theta)/cos(_theta), substep=URule(u_var=_u, u_func=cos(_theta), constant=-1, substep=ConstantTimesRule(constant=-1, other=1/_u, substep=ReciprocalRule(func=_u, context=1/_u, symbol=_u), context=1/_u, symbol=_u), context=sin(_theta)/cos(_theta), symbol=_theta), context=tan(_theta), symbol=_theta)], context=tan(_theta)*sec(_theta)**4 - 2*tan(_theta)*sec(_theta)**2 + tan(_theta), symbol=_theta), context=(sec(_theta)**2 - 1)**2*tan(_theta), symbol=_theta)], context=(sec(_theta)**2 - 1)**2*tan(_theta), symbol=_theta), context=tan(_theta)**5, symbol=_theta), restriction=True, context=x**4*sqrt(x**2)/(x**2 + 1), symbol=x)
Vuelva a escribir el integrando:
TrigSubstitutionRule(theta=_theta, func=tan(_theta), rewritten=tan(_theta)**3, substep=RewriteRule(rewritten=(sec(_theta)**2 - 1)*tan(_theta), substep=AlternativeRule(alternatives=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sec(_theta)**2, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=(_u - 1)/_u, substep=RewriteRule(rewritten=1 - 1/_u, substep=AddRule(substeps=[ConstantRule(constant=1, context=1, symbol=_u), ConstantTimesRule(constant=-1, other=1/_u, substep=ReciprocalRule(func=_u, context=1/_u, symbol=_u), context=-1/_u, symbol=_u)], context=1 - 1/_u, symbol=_u), context=(_u - 1)/_u, symbol=_u), context=(_u - 1)/_u, symbol=_u), context=(sec(_theta)**2 - 1)*tan(_theta), symbol=_theta), URule(u_var=_u, u_func=sec(_theta), constant=1, substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=_u**2, constant=1/2, substep=ConstantTimesRule(constant=1/2, other=(_u - 1)/_u, substep=RewriteRule(rewritten=1 - 1/_u, substep=AddRule(substeps=[ConstantRule(constant=1, context=1, symbol=_u), ConstantTimesRule(constant=-1, other=1/_u, substep=ReciprocalRule(func=_u, context=1/_u, symbol=_u), context=-1/_u, symbol=_u)], context=1 - 1/_u, symbol=_u), context=(_u - 1)/_u, symbol=_u), context=(_u - 1)/_u, symbol=_u), context=(_u**2 - 1)/_u, symbol=_u), RewriteRule(rewritten=_u - 1/_u, substep=AddRule(substeps=[PowerRule(base=_u, exp=1, context=_u, symbol=_u), ConstantTimesRule(constant=-1, other=1/_u, substep=ReciprocalRule(func=_u, context=1/_u, symbol=_u), context=-1/_u, symbol=_u)], context=_u - 1/_u, symbol=_u), context=(_u**2 - 1)/_u, symbol=_u)], context=(_u**2 - 1)/_u, symbol=_u), context=(sec(_theta)**2 - 1)*tan(_theta), symbol=_theta)], context=(sec(_theta)**2 - 1)*tan(_theta), symbol=_theta), RewriteRule(rewritten=tan(_theta)*sec(_theta)**2 - tan(_theta), substep=AddRule(substeps=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sec(_theta), constant=1, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**2, symbol=_theta), URule(u_var=_u, u_func=tan(_theta), constant=1, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**2, symbol=_theta)], context=tan(_theta)*sec(_theta)**2, symbol=_theta), ConstantTimesRule(constant=-1, other=tan(_theta), substep=RewriteRule(rewritten=sin(_theta)/cos(_theta), substep=URule(u_var=_u, u_func=cos(_theta), constant=-1, substep=ConstantTimesRule(constant=-1, other=1/_u, substep=ReciprocalRule(func=_u, context=1/_u, symbol=_u), context=1/_u, symbol=_u), context=sin(_theta)/cos(_theta), symbol=_theta), context=tan(_theta), symbol=_theta), context=-tan(_theta), symbol=_theta)], context=tan(_theta)*sec(_theta)**2 - tan(_theta), symbol=_theta), context=(sec(_theta)**2 - 1)*tan(_theta), symbol=_theta), RewriteRule(rewritten=tan(_theta)*sec(_theta)**2 - tan(_theta), substep=AddRule(substeps=[AlternativeRule(alternatives=[URule(u_var=_u, u_func=sec(_theta), constant=1, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**2, symbol=_theta), URule(u_var=_u, u_func=tan(_theta), constant=1, substep=PowerRule(base=_u, exp=1, context=_u, symbol=_u), context=tan(_theta)*sec(_theta)**2, symbol=_theta)], context=tan(_theta)*sec(_theta)**2, symbol=_theta), ConstantTimesRule(constant=-1, other=tan(_theta), substep=RewriteRule(rewritten=sin(_theta)/cos(_theta), substep=URule(u_var=_u, u_func=cos(_theta), constant=-1, substep=ConstantTimesRule(constant=-1, other=1/_u, substep=ReciprocalRule(func=_u, context=1/_u, symbol=_u), context=1/_u, symbol=_u), context=sin(_theta)/cos(_theta), symbol=_theta), context=tan(_theta), symbol=_theta), context=-tan(_theta), symbol=_theta)], context=tan(_theta)*sec(_theta)**2 - tan(_theta), symbol=_theta), context=(sec(_theta)**2 - 1)*tan(_theta), symbol=_theta)], context=(sec(_theta)**2 - 1)*tan(_theta), symbol=_theta), context=tan(_theta)**3, symbol=_theta), restriction=True, context=x**2*sqrt(x**2)/(x**2 + 1), symbol=x)
El resultado es:
Ahora simplificar:
Añadimos la constante de integración:
Respuesta:
/ | | 3 | _________ 2 | / 2 4 2 / 2\ | / x + x 1 x \1 + x / | / ------- dx = - - + C - -- + --------- | / 2 2 2 4 | \/ 1 + x | /
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.