3.6.70 \(\int \frac {1}{x^2 (a+b x^3)^{2/3}} \, dx\) [570]

Optimal. Leaf size=19 \[ -\frac {\sqrt [3]{a+b x^3}}{a x} \]

[Out]

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

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Rubi [A]
time = 0.00, antiderivative size = 19, normalized size of antiderivative = 1.00, 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 = {270} \begin {gather*} -\frac {\sqrt [3]{a+b x^3}}{a x} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[1/(x^2*(a + b*x^3)^(2/3)),x]

[Out]

-((a + b*x^3)^(1/3)/(a*x))

Rule 270

Int[((c_.)*(x_))^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Simp[(c*x)^(m + 1)*((a + b*x^n)^(p + 1)/(a*
c*(m + 1))), x] /; FreeQ[{a, b, c, m, n, p}, x] && EqQ[(m + 1)/n + p + 1, 0] && NeQ[m, -1]

Rubi steps

\begin {align*} \int \frac {1}{x^2 \left (a+b x^3\right )^{2/3}} \, dx &=-\frac {\sqrt [3]{a+b x^3}}{a x}\\ \end {align*}

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Mathematica [A]
time = 0.10, size = 19, normalized size = 1.00 \begin {gather*} -\frac {\sqrt [3]{a+b x^3}}{a x} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[1/(x^2*(a + b*x^3)^(2/3)),x]

[Out]

-((a + b*x^3)^(1/3)/(a*x))

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Maple [A]
time = 0.14, size = 18, normalized size = 0.95

method	result	size
gosper	\(-\frac {\left (b \,x^{3}+a \right )^{\frac {1}{3}}}{a x}\)	\(18\)
trager	\(-\frac {\left (b \,x^{3}+a \right )^{\frac {1}{3}}}{a x}\)	\(18\)
risch	\(-\frac {\left (b \,x^{3}+a \right )^{\frac {1}{3}}}{a x}\)	\(18\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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Maxima [A]
time = 0.29, size = 17, normalized size = 0.89 \begin {gather*} -\frac {{\left (b x^{3} + a\right )}^{\frac {1}{3}}}{a x} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-(b*x^3 + a)^(1/3)/(a*x)

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Fricas [A]
time = 0.35, size = 17, normalized size = 0.89 \begin {gather*} -\frac {{\left (b x^{3} + a\right )}^{\frac {1}{3}}}{a x} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-(b*x^3 + a)^(1/3)/(a*x)

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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 31 vs. \(2 (14) = 28\).
time = 0.33, size = 31, normalized size = 1.63 \begin {gather*} \frac {\sqrt [3]{b} \sqrt [3]{\frac {a}{b x^{3}} + 1} \Gamma \left (- \frac {1}{3}\right )}{3 a \Gamma \left (\frac {2}{3}\right )} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

b**(1/3)*(a/(b*x**3) + 1)**(1/3)*gamma(-1/3)/(3*a*gamma(2/3))

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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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Mupad [B]
time = 1.03, size = 17, normalized size = 0.89 \begin {gather*} -\frac {{\left (b\,x^3+a\right )}^{1/3}}{a\,x} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/(x^2*(a + b*x^3)^(2/3)),x)

[Out]

-(a + b*x^3)^(1/3)/(a*x)

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