3.513 \(\int x^2 \sqrt [3]{a+b x^3} \, dx\)

Optimal. Leaf size=18 \[ \frac{\left (a+b x^3\right )^{4/3}}{4 b} \]

[Out]

(a + b*x^3)^(4/3)/(4*b)

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Rubi [A]  time = 0.0037848, antiderivative size = 18, normalized size of antiderivative = 1., number of steps used = 1, number of rules used = 1, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.067, Rules used = {261} \[ \frac{\left (a+b x^3\right )^{4/3}}{4 b} \]

Antiderivative was successfully verified.

[In]

Int[x^2*(a + b*x^3)^(1/3),x]

[Out]

(a + b*x^3)^(4/3)/(4*b)

Rule 261

Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Simp[(a + b*x^n)^(p + 1)/(b*n*(p + 1)), x] /; FreeQ
[{a, b, m, n, p}, x] && EqQ[m, n - 1] && NeQ[p, -1]

Rubi steps

\begin{align*} \int x^2 \sqrt [3]{a+b x^3} \, dx &=\frac{\left (a+b x^3\right )^{4/3}}{4 b}\\ \end{align*}

Mathematica [A]  time = 0.0032137, size = 18, normalized size = 1. \[ \frac{\left (a+b x^3\right )^{4/3}}{4 b} \]

Antiderivative was successfully verified.

[In]

Integrate[x^2*(a + b*x^3)^(1/3),x]

[Out]

(a + b*x^3)^(4/3)/(4*b)

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Maple [A]  time = 0.003, size = 15, normalized size = 0.8 \begin{align*}{\frac{1}{4\,b} \left ( b{x}^{3}+a \right ) ^{{\frac{4}{3}}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^2*(b*x^3+a)^(1/3),x)

[Out]

1/4*(b*x^3+a)^(4/3)/b

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Maxima [A]  time = 1.01105, size = 19, normalized size = 1.06 \begin{align*} \frac{{\left (b x^{3} + a\right )}^{\frac{4}{3}}}{4 \, b} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*(b*x^3+a)^(1/3),x, algorithm="maxima")

[Out]

1/4*(b*x^3 + a)^(4/3)/b

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Fricas [A]  time = 1.58804, size = 34, normalized size = 1.89 \begin{align*} \frac{{\left (b x^{3} + a\right )}^{\frac{4}{3}}}{4 \, b} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*(b*x^3+a)^(1/3),x, algorithm="fricas")

[Out]

1/4*(b*x^3 + a)^(4/3)/b

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Sympy [A]  time = 0.303816, size = 39, normalized size = 2.17 \begin{align*} \begin{cases} \frac{a \sqrt [3]{a + b x^{3}}}{4 b} + \frac{x^{3} \sqrt [3]{a + b x^{3}}}{4} & \text{for}\: b \neq 0 \\\frac{\sqrt [3]{a} x^{3}}{3} & \text{otherwise} \end{cases} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**2*(b*x**3+a)**(1/3),x)

[Out]

Piecewise((a*(a + b*x**3)**(1/3)/(4*b) + x**3*(a + b*x**3)**(1/3)/4, Ne(b, 0)), (a**(1/3)*x**3/3, True))

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Giac [A]  time = 1.13198, size = 19, normalized size = 1.06 \begin{align*} \frac{{\left (b x^{3} + a\right )}^{\frac{4}{3}}}{4 \, b} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*(b*x^3+a)^(1/3),x, algorithm="giac")

[Out]

1/4*(b*x^3 + a)^(4/3)/b