3.23 \(\int x^2 \cosh (x^3) \, dx\)

Optimal. Leaf size=8 \[ \frac{\sinh \left (x^3\right )}{3} \]

[Out]

Sinh[x^3]/3

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Rubi [A]  time = 0.0114006, antiderivative size = 8, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 2, integrand size = 8, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.25, Rules used = {5321, 2637} \[ \frac{\sinh \left (x^3\right )}{3} \]

Antiderivative was successfully verified.

[In]

Int[x^2*Cosh[x^3],x]

[Out]

Sinh[x^3]/3

Rule 5321

Int[((a_.) + Cosh[(c_.) + (d_.)*(x_)^(n_)]*(b_.))^(p_.)*(x_)^(m_.), x_Symbol] :> Dist[1/n, Subst[Int[x^(Simpli
fy[(m + 1)/n] - 1)*(a + b*Cosh[c + d*x])^p, x], x, x^n], x] /; FreeQ[{a, b, c, d, m, n, p}, x] && IntegerQ[Sim
plify[(m + 1)/n]] && (EqQ[p, 1] || EqQ[m, n - 1] || (IntegerQ[p] && GtQ[Simplify[(m + 1)/n], 0]))

Rule 2637

Int[sin[Pi/2 + (c_.) + (d_.)*(x_)], x_Symbol] :> Simp[Sin[c + d*x]/d, x] /; FreeQ[{c, d}, x]

Rubi steps

\begin{align*} \int x^2 \cosh \left (x^3\right ) \, dx &=\frac{1}{3} \operatorname{Subst}\left (\int \cosh (x) \, dx,x,x^3\right )\\ &=\frac{\sinh \left (x^3\right )}{3}\\ \end{align*}

Mathematica [A]  time = 0.0024136, size = 8, normalized size = 1. \[ \frac{\sinh \left (x^3\right )}{3} \]

Antiderivative was successfully verified.

[In]

Integrate[x^2*Cosh[x^3],x]

[Out]

Sinh[x^3]/3

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Maple [A]  time = 0.006, size = 7, normalized size = 0.9 \begin{align*}{\frac{\sinh \left ({x}^{3} \right ) }{3}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^2*cosh(x^3),x)

[Out]

1/3*sinh(x^3)

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Maxima [A]  time = 1.11214, size = 8, normalized size = 1. \begin{align*} \frac{1}{3} \, \sinh \left (x^{3}\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*cosh(x^3),x, algorithm="maxima")

[Out]

1/3*sinh(x^3)

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Fricas [A]  time = 1.74606, size = 20, normalized size = 2.5 \begin{align*} \frac{1}{3} \, \sinh \left (x^{3}\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*cosh(x^3),x, algorithm="fricas")

[Out]

1/3*sinh(x^3)

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Sympy [A]  time = 0.333811, size = 5, normalized size = 0.62 \begin{align*} \frac{\sinh{\left (x^{3} \right )}}{3} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**2*cosh(x**3),x)

[Out]

sinh(x**3)/3

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Giac [B]  time = 1.29961, size = 20, normalized size = 2.5 \begin{align*} -\frac{1}{6} \, e^{\left (-x^{3}\right )} + \frac{1}{6} \, e^{\left (x^{3}\right )} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*cosh(x^3),x, algorithm="giac")

[Out]

-1/6*e^(-x^3) + 1/6*e^(x^3)