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

Optimal. Leaf size=18 \[ \frac{\left (a+b x^3\right )^{2/3}}{2 b} \]

[Out]

(a + b*x^3)^(2/3)/(2*b)

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Rubi [A]  time = 0.0044997, 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} \[ \frac{\left (a+b x^3\right )^{2/3}}{2 b} \]

Antiderivative was successfully verified.

[In]

Int[x^2/(a + b*x^3)^(1/3),x]

[Out]

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

Mathematica [A]  time = 0.002952, size = 18, normalized size = 1. \[ \frac{\left (a+b x^3\right )^{2/3}}{2 b} \]

Antiderivative was successfully verified.

[In]

Integrate[x^2/(a + b*x^3)^(1/3),x]

[Out]

(a + b*x^3)^(2/3)/(2*b)

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Maple [A]  time = 0.004, size = 15, normalized size = 0.8 \begin{align*}{\frac{1}{2\,b} \left ( b{x}^{3}+a \right ) ^{{\frac{2}{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]

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

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Maxima [A]  time = 1.02207, size = 19, normalized size = 1.06 \begin{align*} \frac{{\left (b x^{3} + a\right )}^{\frac{2}{3}}}{2 \, 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]

1/2*(b*x^3 + a)^(2/3)/b

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Fricas [A]  time = 1.40833, size = 34, normalized size = 1.89 \begin{align*} \frac{{\left (b x^{3} + a\right )}^{\frac{2}{3}}}{2 \, 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]

1/2*(b*x^3 + a)^(2/3)/b

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Sympy [A]  time = 0.512137, size = 22, normalized size = 1.22 \begin{align*} \begin{cases} \frac{\left (a + b x^{3}\right )^{\frac{2}{3}}}{2 b} & \text{for}\: b \neq 0 \\\frac{x^{3}}{3 \sqrt [3]{a}} & \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 + b*x**3)**(2/3)/(2*b), Ne(b, 0)), (x**3/(3*a**(1/3)), True))

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Giac [A]  time = 1.09186, size = 19, normalized size = 1.06 \begin{align*} \frac{{\left (b x^{3} + a\right )}^{\frac{2}{3}}}{2 \, 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]

1/2*(b*x^3 + a)^(2/3)/b