3.42 \(\int x \sin ^3(a+\frac{2}{3} \sqrt{-\frac{1}{n^2}} \log (c x^n)) \, dx\)

Optimal. Leaf size=178 \[ -\frac{9}{32} \sqrt{-\frac{1}{n^2}} n x^2 e^{a \sqrt{-\frac{1}{n^2}} n} \left (c x^n\right )^{\left .-\frac{2}{3}\right /n}+\frac{9}{64} \sqrt{-\frac{1}{n^2}} n x^2 e^{-a \sqrt{-\frac{1}{n^2}} n} \left (c x^n\right )^{\left .\frac{2}{3}\right /n}-\frac{1}{32} \sqrt{-\frac{1}{n^2}} n x^2 e^{-3 a \sqrt{-\frac{1}{n^2}} n} \left (c x^n\right )^{2/n}+\frac{1}{8} \sqrt{-\frac{1}{n^2}} n x^2 e^{3 a \sqrt{-\frac{1}{n^2}} n} \log (x) \left (c x^n\right )^{-2/n} \]

[Out]

(-9*E^(a*Sqrt[-n^(-2)]*n)*Sqrt[-n^(-2)]*n*x^2)/(32*(c*x^n)^(2/(3*n))) + (9*Sqrt[-n^(-2)]*n*x^2*(c*x^n)^(2/(3*n
)))/(64*E^(a*Sqrt[-n^(-2)]*n)) - (Sqrt[-n^(-2)]*n*x^2*(c*x^n)^(2/n))/(32*E^(3*a*Sqrt[-n^(-2)]*n)) + (E^(3*a*Sq
rt[-n^(-2)]*n)*Sqrt[-n^(-2)]*n*x^2*Log[x])/(8*(c*x^n)^(2/n))

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Rubi [A]  time = 0.110903, antiderivative size = 178, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 2, integrand size = 26, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.077, Rules used = {4493, 4489} \[ -\frac{9}{32} \sqrt{-\frac{1}{n^2}} n x^2 e^{a \sqrt{-\frac{1}{n^2}} n} \left (c x^n\right )^{\left .-\frac{2}{3}\right /n}+\frac{9}{64} \sqrt{-\frac{1}{n^2}} n x^2 e^{-a \sqrt{-\frac{1}{n^2}} n} \left (c x^n\right )^{\left .\frac{2}{3}\right /n}-\frac{1}{32} \sqrt{-\frac{1}{n^2}} n x^2 e^{-3 a \sqrt{-\frac{1}{n^2}} n} \left (c x^n\right )^{2/n}+\frac{1}{8} \sqrt{-\frac{1}{n^2}} n x^2 e^{3 a \sqrt{-\frac{1}{n^2}} n} \log (x) \left (c x^n\right )^{-2/n} \]

Antiderivative was successfully verified.

[In]

Int[x*Sin[a + (2*Sqrt[-n^(-2)]*Log[c*x^n])/3]^3,x]

[Out]

(-9*E^(a*Sqrt[-n^(-2)]*n)*Sqrt[-n^(-2)]*n*x^2)/(32*(c*x^n)^(2/(3*n))) + (9*Sqrt[-n^(-2)]*n*x^2*(c*x^n)^(2/(3*n
)))/(64*E^(a*Sqrt[-n^(-2)]*n)) - (Sqrt[-n^(-2)]*n*x^2*(c*x^n)^(2/n))/(32*E^(3*a*Sqrt[-n^(-2)]*n)) + (E^(3*a*Sq
rt[-n^(-2)]*n)*Sqrt[-n^(-2)]*n*x^2*Log[x])/(8*(c*x^n)^(2/n))

Rule 4493

Int[((e_.)*(x_))^(m_.)*Sin[((a_.) + Log[(c_.)*(x_)^(n_.)]*(b_.))*(d_.)]^(p_.), x_Symbol] :> Dist[(e*x)^(m + 1)
/(e*n*(c*x^n)^((m + 1)/n)), Subst[Int[x^((m + 1)/n - 1)*Sin[d*(a + b*Log[x])]^p, x], x, c*x^n], x] /; FreeQ[{a
, b, c, d, e, m, n, p}, x] && (NeQ[c, 1] || NeQ[n, 1])

Rule 4489

Int[((e_.)*(x_))^(m_.)*Sin[((a_.) + Log[x_]*(b_.))*(d_.)]^(p_.), x_Symbol] :> Dist[(m + 1)^p/(2^p*b^p*d^p*p^p)
, Int[ExpandIntegrand[(e*x)^m*(E^((a*b*d^2*p)/(m + 1))/x^((m + 1)/p) - x^((m + 1)/p)/E^((a*b*d^2*p)/(m + 1)))^
p, x], x], x] /; FreeQ[{a, b, d, e, m}, x] && IGtQ[p, 0] && EqQ[b^2*d^2*p^2 + (m + 1)^2, 0]

Rubi steps

\begin{align*} \int x \sin ^3\left (a+\frac{2}{3} \sqrt{-\frac{1}{n^2}} \log \left (c x^n\right )\right ) \, dx &=\frac{\left (x^2 \left (c x^n\right )^{-2/n}\right ) \operatorname{Subst}\left (\int x^{-1+\frac{2}{n}} \sin ^3\left (a+\frac{2}{3} \sqrt{-\frac{1}{n^2}} \log (x)\right ) \, dx,x,c x^n\right )}{n}\\ &=\frac{1}{8} \left (\sqrt{-\frac{1}{n^2}} x^2 \left (c x^n\right )^{-2/n}\right ) \operatorname{Subst}\left (\int \left (\frac{e^{3 a \sqrt{-\frac{1}{n^2}} n}}{x}-3 e^{a \sqrt{-\frac{1}{n^2}} n} x^{-1+\frac{4}{3 n}}+3 e^{-a \sqrt{-\frac{1}{n^2}} n} x^{-1+\frac{8}{3 n}}-e^{-3 a \sqrt{-\frac{1}{n^2}} n} x^{-1+\frac{4}{n}}\right ) \, dx,x,c x^n\right )\\ &=-\frac{9}{32} e^{a \sqrt{-\frac{1}{n^2}} n} \sqrt{-\frac{1}{n^2}} n x^2 \left (c x^n\right )^{\left .-\frac{2}{3}\right /n}+\frac{9}{64} e^{-a \sqrt{-\frac{1}{n^2}} n} \sqrt{-\frac{1}{n^2}} n x^2 \left (c x^n\right )^{\left .\frac{2}{3}\right /n}-\frac{1}{32} e^{-3 a \sqrt{-\frac{1}{n^2}} n} \sqrt{-\frac{1}{n^2}} n x^2 \left (c x^n\right )^{2/n}+\frac{1}{8} e^{3 a \sqrt{-\frac{1}{n^2}} n} \sqrt{-\frac{1}{n^2}} n x^2 \left (c x^n\right )^{-2/n} \log (x)\\ \end{align*}

Mathematica [F]  time = 0.245628, size = 0, normalized size = 0. \[ \int x \sin ^3\left (a+\frac{2}{3} \sqrt{-\frac{1}{n^2}} \log \left (c x^n\right )\right ) \, dx \]

Verification is Not applicable to the result.

[In]

Integrate[x*Sin[a + (2*Sqrt[-n^(-2)]*Log[c*x^n])/3]^3,x]

[Out]

Integrate[x*Sin[a + (2*Sqrt[-n^(-2)]*Log[c*x^n])/3]^3, x]

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Maple [F]  time = 0.07, size = 0, normalized size = 0. \begin{align*} \int x \left ( \sin \left ( a+{\frac{2\,\ln \left ( c{x}^{n} \right ) }{3}\sqrt{-{n}^{-2}}} \right ) \right ) ^{3}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x*sin(a+2/3*ln(c*x^n)*(-1/n^2)^(1/2))^3,x)

[Out]

int(x*sin(a+2/3*ln(c*x^n)*(-1/n^2)^(1/2))^3,x)

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Maxima [A]  time = 1.15204, size = 151, normalized size = 0.85 \begin{align*} \frac{9 \, c^{\frac{10}{3 \, n}} x^{2}{\left (x^{n}\right )}^{\frac{4}{3 \, n}} \sin \left (a\right ) - 8 \, c^{\frac{2}{3 \, n}}{\left (x^{n}\right )}^{\frac{2}{3 \, n}} \log \left (x\right ) \sin \left (3 \, a\right ) + 18 \, c^{\frac{2}{n}} x^{2} \sin \left (a\right ) - 2 \, c^{\frac{14}{3 \, n}} e^{\left (\frac{2 \, \log \left (x^{n}\right )}{3 \, n} + 4 \, \log \left (x\right )\right )} \sin \left (3 \, a\right )}{64 \, c^{\frac{8}{3 \, n}}{\left (x^{n}\right )}^{\frac{2}{3 \, n}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*sin(a+2/3*log(c*x^n)*(-1/n^2)^(1/2))^3,x, algorithm="maxima")

[Out]

1/64*(9*c^(10/3/n)*x^2*(x^n)^(4/3/n)*sin(a) - 8*c^(2/3/n)*(x^n)^(2/3/n)*log(x)*sin(3*a) + 18*c^(2/n)*x^2*sin(a
) - 2*c^(14/3/n)*e^(2/3*log(x^n)/n + 4*log(x))*sin(3*a))/(c^(8/3/n)*(x^n)^(2/3/n))

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Fricas [C]  time = 0.48014, size = 250, normalized size = 1.4 \begin{align*} \frac{1}{64} \,{\left (-2 i \, x^{4} + 9 i \, x^{\frac{8}{3}} e^{\left (\frac{2 \,{\left (3 i \, a n - 2 \, \log \left (c\right )\right )}}{3 \, n}\right )} - 18 i \, x^{\frac{4}{3}} e^{\left (\frac{4 \,{\left (3 i \, a n - 2 \, \log \left (c\right )\right )}}{3 \, n}\right )} + 24 i \, e^{\left (\frac{2 \,{\left (3 i \, a n - 2 \, \log \left (c\right )\right )}}{n}\right )} \log \left (x^{\frac{1}{3}}\right )\right )} e^{\left (-\frac{3 i \, a n - 2 \, \log \left (c\right )}{n}\right )} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*sin(a+2/3*log(c*x^n)*(-1/n^2)^(1/2))^3,x, algorithm="fricas")

[Out]

1/64*(-2*I*x^4 + 9*I*x^(8/3)*e^(2/3*(3*I*a*n - 2*log(c))/n) - 18*I*x^(4/3)*e^(4/3*(3*I*a*n - 2*log(c))/n) + 24
*I*e^(2*(3*I*a*n - 2*log(c))/n)*log(x^(1/3)))*e^(-(3*I*a*n - 2*log(c))/n)

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Sympy [F(-1)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*sin(a+2/3*ln(c*x**n)*(-1/n**2)**(1/2))**3,x)

[Out]

Timed out

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Giac [F(-2)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: NotImplementedError} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*sin(a+2/3*log(c*x^n)*(-1/n^2)^(1/2))^3,x, algorithm="giac")

[Out]

Exception raised: NotImplementedError