3.13.80 \(\int \frac {(-1+x^3)^{2/3}}{x^3} \, dx\)

Optimal. Leaf size=93 \[ -\frac {1}{3} \log \left (\sqrt [3]{x^3-1}-x\right )+\frac {\tan ^{-1}\left (\frac {\sqrt {3} x}{2 \sqrt [3]{x^3-1}+x}\right )}{\sqrt {3}}-\frac {\left (x^3-1\right )^{2/3}}{2 x^2}+\frac {1}{6} \log \left (\sqrt [3]{x^3-1} x+\left (x^3-1\right )^{2/3}+x^2\right ) \]

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Rubi [A]  time = 0.01, antiderivative size = 62, normalized size of antiderivative = 0.67, number of steps used = 2, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {277, 239} \begin {gather*} -\frac {1}{2} \log \left (\sqrt [3]{x^3-1}-x\right )+\frac {\tan ^{-1}\left (\frac {\frac {2 x}{\sqrt [3]{x^3-1}}+1}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {\left (x^3-1\right )^{2/3}}{2 x^2} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(-1 + x^3)^(2/3)/x^3,x]

[Out]

-1/2*(-1 + x^3)^(2/3)/x^2 + ArcTan[(1 + (2*x)/(-1 + x^3)^(1/3))/Sqrt[3]]/Sqrt[3] - Log[-x + (-1 + x^3)^(1/3)]/
2

Rule 239

Int[((a_) + (b_.)*(x_)^3)^(-1/3), x_Symbol] :> Simp[ArcTan[(1 + (2*Rt[b, 3]*x)/(a + b*x^3)^(1/3))/Sqrt[3]]/(Sq
rt[3]*Rt[b, 3]), x] - Simp[Log[(a + b*x^3)^(1/3) - Rt[b, 3]*x]/(2*Rt[b, 3]), x] /; FreeQ[{a, b}, x]

Rule 277

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

Rubi steps

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

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Mathematica [C]  time = 0.01, size = 40, normalized size = 0.43 \begin {gather*} -\frac {\left (x^3-1\right )^{2/3} \, _2F_1\left (-\frac {2}{3},-\frac {2}{3};\frac {1}{3};x^3\right )}{2 x^2 \left (1-x^3\right )^{2/3}} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(-1 + x^3)^(2/3)/x^3,x]

[Out]

-1/2*((-1 + x^3)^(2/3)*Hypergeometric2F1[-2/3, -2/3, 1/3, x^3])/(x^2*(1 - x^3)^(2/3))

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IntegrateAlgebraic [A]  time = 0.15, size = 93, normalized size = 1.00 \begin {gather*} -\frac {\left (-1+x^3\right )^{2/3}}{2 x^2}+\frac {\tan ^{-1}\left (\frac {\sqrt {3} x}{x+2 \sqrt [3]{-1+x^3}}\right )}{\sqrt {3}}-\frac {1}{3} \log \left (-x+\sqrt [3]{-1+x^3}\right )+\frac {1}{6} \log \left (x^2+x \sqrt [3]{-1+x^3}+\left (-1+x^3\right )^{2/3}\right ) \end {gather*}

Antiderivative was successfully verified.

[In]

IntegrateAlgebraic[(-1 + x^3)^(2/3)/x^3,x]

[Out]

-1/2*(-1 + x^3)^(2/3)/x^2 + ArcTan[(Sqrt[3]*x)/(x + 2*(-1 + x^3)^(1/3))]/Sqrt[3] - Log[-x + (-1 + x^3)^(1/3)]/
3 + Log[x^2 + x*(-1 + x^3)^(1/3) + (-1 + x^3)^(2/3)]/6

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fricas [A]  time = 0.76, size = 105, normalized size = 1.13 \begin {gather*} \frac {2 \, \sqrt {3} x^{2} \arctan \left (-\frac {25382 \, \sqrt {3} {\left (x^{3} - 1\right )}^{\frac {1}{3}} x^{2} - 13720 \, \sqrt {3} {\left (x^{3} - 1\right )}^{\frac {2}{3}} x + \sqrt {3} {\left (5831 \, x^{3} - 7200\right )}}{58653 \, x^{3} - 8000}\right ) - x^{2} \log \left (-3 \, {\left (x^{3} - 1\right )}^{\frac {1}{3}} x^{2} + 3 \, {\left (x^{3} - 1\right )}^{\frac {2}{3}} x + 1\right ) - 3 \, {\left (x^{3} - 1\right )}^{\frac {2}{3}}}{6 \, x^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((x^3-1)^(2/3)/x^3,x, algorithm="fricas")

[Out]

1/6*(2*sqrt(3)*x^2*arctan(-(25382*sqrt(3)*(x^3 - 1)^(1/3)*x^2 - 13720*sqrt(3)*(x^3 - 1)^(2/3)*x + sqrt(3)*(583
1*x^3 - 7200))/(58653*x^3 - 8000)) - x^2*log(-3*(x^3 - 1)^(1/3)*x^2 + 3*(x^3 - 1)^(2/3)*x + 1) - 3*(x^3 - 1)^(
2/3))/x^2

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giac [F]  time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {{\left (x^{3} - 1\right )}^{\frac {2}{3}}}{x^{3}}\,{d x} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((x^3-1)^(2/3)/x^3,x, algorithm="giac")

[Out]

integrate((x^3 - 1)^(2/3)/x^3, x)

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maple [C]  time = 2.90, size = 33, normalized size = 0.35

method	result	size
meijerg	\(-\frac {\mathrm {signum}\left (x^{3}-1\right )^{\frac {2}{3}} \hypergeom \left (\left [-\frac {2}{3}, -\frac {2}{3}\right ], \left [\frac {1}{3}\right ], x^{3}\right )}{2 \left (-\mathrm {signum}\left (x^{3}-1\right )\right )^{\frac {2}{3}} x^{2}}\)	\(33\)
risch	\(-\frac {\left (x^{3}-1\right )^{\frac {2}{3}}}{2 x^{2}}+\frac {\left (-\mathrm {signum}\left (x^{3}-1\right )\right )^{\frac {1}{3}} x \hypergeom \left (\left [\frac {1}{3}, \frac {1}{3}\right ], \left [\frac {4}{3}\right ], x^{3}\right )}{\mathrm {signum}\left (x^{3}-1\right )^{\frac {1}{3}}}\)	\(43\)
trager	\(-\frac {\left (x^{3}-1\right )^{\frac {2}{3}}}{2 x^{2}}+\frac {4 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) \ln \left (182271728 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )^{2} x^{3}[phone] \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) \left (x^{3}-1\right )^{\frac {2}{3}} x [phone] \left (x^{3}-1\right )^{\frac {1}{3}} \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) x^{2}[phone] \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) x^{3}-1508552373 x \left (x^{3}-1\right )^{\frac {2}{3}}-1508552373 x^{2} \left (x^{3}-1\right )^{\frac {1}{3}}-1497160390 x^{3}-1458173824 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )^{2}[phone] \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )[phone]\right )}{3}+\frac {\ln \left (182271728 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )^{2} x^{3}-775851456 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) \left (x^{3}-1\right )^{\frac {2}{3}} x -775851456 \left (x^{3}-1\right )^{\frac {1}{3}} \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) x^{2}-821419388 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) x^{3}-1314589509 x \left (x^{3}-1\right )^{\frac {2}{3}}-1314589509 x^{2} \left (x^{3}-1\right )^{\frac {1}{3}}-1303197526 x^{3}-1458173824 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )^{2}-1129625404 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )[phone]\right )}{3}-\frac {4 \ln \left (182271728 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )^{2} x^{3}-775851456 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) \left (x^{3}-1\right )^{\frac {2}{3}} x -775851456 \left (x^{3}-1\right )^{\frac {1}{3}} \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) x^{2}-821419388 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right ) x^{3}-1314589509 x \left (x^{3}-1\right )^{\frac {2}{3}}-1314589509 x^{2} \left (x^{3}-1\right )^{\frac {1}{3}}-1303197526 x^{3}-1458173824 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )^{2}-1129625404 \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )[phone]\right ) \RootOf \left (16 \textit {\_Z}^{2}-4 \textit {\_Z} +1\right )}{3}\)	\(450\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((x^3-1)^(2/3)/x^3,x,method=_RETURNVERBOSE)

[Out]

-1/2*signum(x^3-1)^(2/3)/(-signum(x^3-1))^(2/3)/x^2*hypergeom([-2/3,-2/3],[1/3],x^3)

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maxima [A]  time = 0.57, size = 81, normalized size = 0.87 \begin {gather*} -\frac {1}{3} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (\frac {2 \, {\left (x^{3} - 1\right )}^{\frac {1}{3}}}{x} + 1\right )}\right ) - \frac {{\left (x^{3} - 1\right )}^{\frac {2}{3}}}{2 \, x^{2}} + \frac {1}{6} \, \log \left (\frac {{\left (x^{3} - 1\right )}^{\frac {1}{3}}}{x} + \frac {{\left (x^{3} - 1\right )}^{\frac {2}{3}}}{x^{2}} + 1\right ) - \frac {1}{3} \, \log \left (\frac {{\left (x^{3} - 1\right )}^{\frac {1}{3}}}{x} - 1\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((x^3-1)^(2/3)/x^3,x, algorithm="maxima")

[Out]

-1/3*sqrt(3)*arctan(1/3*sqrt(3)*(2*(x^3 - 1)^(1/3)/x + 1)) - 1/2*(x^3 - 1)^(2/3)/x^2 + 1/6*log((x^3 - 1)^(1/3)
/x + (x^3 - 1)^(2/3)/x^2 + 1) - 1/3*log((x^3 - 1)^(1/3)/x - 1)

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mupad [F]  time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int \frac {{\left (x^3-1\right )}^{2/3}}{x^3} \,d x \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((x^3 - 1)^(2/3)/x^3,x)

[Out]

int((x^3 - 1)^(2/3)/x^3, x)

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sympy [C]  time = 0.91, size = 37, normalized size = 0.40 \begin {gather*} \frac {e^{\frac {2 i \pi }{3}} \Gamma \left (- \frac {2}{3}\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {2}{3}, - \frac {2}{3} \\ \frac {1}{3} \end {matrix}\middle | {x^{3}} \right )}}{3 x^{2} \Gamma \left (\frac {1}{3}\right )} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((x**3-1)**(2/3)/x**3,x)

[Out]

exp(2*I*pi/3)*gamma(-2/3)*hyper((-2/3, -2/3), (1/3,), x**3)/(3*x**2*gamma(1/3))

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