3 / | | ________ | 3 / 2 | x *\/ x - 1 dx | / 1
Integral(x^3*sqrt(x^2 - 1), (x, 1, 3))
TrigSubstitutionRule(theta=_theta, func=sec(_theta), rewritten=tan(_theta)**2*sec(_theta)**4, substep=RewriteRule(rewritten=(tan(_theta)**2 + 1)*tan(_theta)**2*sec(_theta)**2, substep=AlternativeRule(alternatives=[URule(u_var=_u, u_func=tan(_theta), constant=1, substep=AddRule(substeps=[PowerRule(base=_u, exp=4, context=_u**4, symbol=_u), PowerRule(base=_u, exp=2, context=_u**2, symbol=_u)], context=_u**4 + _u**2, symbol=_u), context=(tan(_theta)**2 + 1)*tan(_theta)**2*sec(_theta)**2, symbol=_theta), RewriteRule(rewritten=tan(_theta)**4*sec(_theta)**2 + tan(_theta)**2*sec(_theta)**2, substep=AddRule(substeps=[URule(u_var=_u, u_func=tan(_theta), constant=1, substep=PowerRule(base=_u, exp=4, context=_u**4, symbol=_u), context=tan(_theta)**4*sec(_theta)**2, symbol=_theta), URule(u_var=_u, u_func=tan(_theta), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=tan(_theta)**2*sec(_theta)**2, symbol=_theta)], context=tan(_theta)**4*sec(_theta)**2 + tan(_theta)**2*sec(_theta)**2, symbol=_theta), context=(tan(_theta)**2 + 1)*tan(_theta)**2*sec(_theta)**2, symbol=_theta), RewriteRule(rewritten=tan(_theta)**4*sec(_theta)**2 + tan(_theta)**2*sec(_theta)**2, substep=AddRule(substeps=[URule(u_var=_u, u_func=tan(_theta), constant=1, substep=PowerRule(base=_u, exp=4, context=_u**4, symbol=_u), context=tan(_theta)**4*sec(_theta)**2, symbol=_theta), URule(u_var=_u, u_func=tan(_theta), constant=1, substep=PowerRule(base=_u, exp=2, context=_u**2, symbol=_u), context=tan(_theta)**2*sec(_theta)**2, symbol=_theta)], context=tan(_theta)**4*sec(_theta)**2 + tan(_theta)**2*sec(_theta)**2, symbol=_theta), context=(tan(_theta)**2 + 1)*tan(_theta)**2*sec(_theta)**2, symbol=_theta)], context=(tan(_theta)**2 + 1)*tan(_theta)**2*sec(_theta)**2, symbol=_theta), context=tan(_theta)**2*sec(_theta)**4, symbol=_theta), restriction=(x > -1) & (x < 1), context=x**3*sqrt(x**2 - 1), symbol=x)
Ahora simplificar:
Añadimos la constante de integración:
Respuesta:
/ | | ________ // 3/2 5/2 \ | 3 / 2 ||/ 2\ / 2\ | | x *\/ x - 1 dx = C + |<\-1 + x / \-1 + x / | | ||------------ + ------------ for And(x > -1, x < 1)| / \\ 3 5 /
___ 464*\/ 2 --------- 15
=
___ 464*\/ 2 --------- 15
464*sqrt(2)/15
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.