Optimal. Leaf size=76 \[ -\frac {3 \log \left (\sqrt [3]{-a^3-b^3 x}+a\right )}{2 a}-\frac {\sqrt {3} \tan ^{-1}\left (\frac {a-2 \sqrt [3]{-a^3-b^3 x}}{\sqrt {3} a}\right )}{a}+\frac {\log (x)}{2 a} \]
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Rubi [A] time = 0.03, antiderivative size = 76, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {56, 617, 204, 31} \[ -\frac {3 \log \left (\sqrt [3]{-a^3-b^3 x}+a\right )}{2 a}-\frac {\sqrt {3} \tan ^{-1}\left (\frac {a-2 \sqrt [3]{-a^3-b^3 x}}{\sqrt {3} a}\right )}{a}+\frac {\log (x)}{2 a} \]
Antiderivative was successfully verified.
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Rule 31
Rule 56
Rule 204
Rule 617
Rubi steps
\begin {align*} \int \frac {1}{x \sqrt [3]{-a^3-b^3 x}} \, dx &=\frac {\log (x)}{2 a}+\frac {3}{2} \operatorname {Subst}\left (\int \frac {1}{a^2-a x+x^2} \, dx,x,\sqrt [3]{-a^3-b^3 x}\right )-\frac {3 \operatorname {Subst}\left (\int \frac {1}{a+x} \, dx,x,\sqrt [3]{-a^3-b^3 x}\right )}{2 a}\\ &=\frac {\log (x)}{2 a}-\frac {3 \log \left (a+\sqrt [3]{-a^3-b^3 x}\right )}{2 a}+\frac {3 \operatorname {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1-\frac {2 \sqrt [3]{-a^3-b^3 x}}{a}\right )}{a}\\ &=-\frac {\sqrt {3} \tan ^{-1}\left (\frac {1-\frac {2 \sqrt [3]{-a^3-b^3 x}}{a}}{\sqrt {3}}\right )}{a}+\frac {\log (x)}{2 a}-\frac {3 \log \left (a+\sqrt [3]{-a^3-b^3 x}\right )}{2 a}\\ \end {align*}
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Mathematica [C] time = 0.01, size = 41, normalized size = 0.54 \[ \frac {3 \left (-a^3-b^3 x\right )^{2/3} \, _2F_1\left (\frac {2}{3},1;\frac {5}{3};\frac {x b^3}{a^3}+1\right )}{2 a^3} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.44, size = 97, normalized size = 1.28 \[ \frac {2 \, \sqrt {3} \arctan \left (-\frac {\sqrt {3} a - 2 \, \sqrt {3} {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}}}{3 \, a}\right ) + \log \left (a^{2} - {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}} a + {\left (-b^{3} x - a^{3}\right )}^{\frac {2}{3}}\right ) - 2 \, \log \left (a + {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}}\right )}{2 \, a} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 1.00, size = 99, normalized size = 1.30 \[ \frac {\sqrt {3} \arctan \left (-\frac {\sqrt {3} {\left (a - 2 \, {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}}\right )}}{3 \, a}\right )}{a} + \frac {\log \left (a^{2} - {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}} a + {\left (-b^{3} x - a^{3}\right )}^{\frac {2}{3}}\right )}{2 \, a} - \frac {\log \left ({\left | a + {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}} \right |}\right )}{a} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.00, size = 101, normalized size = 1.33 \[ \frac {\sqrt {3}\, \arctan \left (\frac {\left (-a +2 \left (-b^{3} x -a^{3}\right )^{\frac {1}{3}}\right ) \sqrt {3}}{3 a}\right )}{a}-\frac {\ln \left (a +\left (-b^{3} x -a^{3}\right )^{\frac {1}{3}}\right )}{a}+\frac {\ln \left (a^{2}-\left (-b^{3} x -a^{3}\right )^{\frac {1}{3}} a +\left (-b^{3} x -a^{3}\right )^{\frac {2}{3}}\right )}{2 a} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 2.92, size = 98, normalized size = 1.29 \[ \frac {\sqrt {3} \arctan \left (-\frac {\sqrt {3} {\left (a - 2 \, {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}}\right )}}{3 \, a}\right )}{a} + \frac {\log \left (a^{2} - {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}} a + {\left (-b^{3} x - a^{3}\right )}^{\frac {2}{3}}\right )}{2 \, a} - \frac {\log \left (a + {\left (-b^{3} x - a^{3}\right )}^{\frac {1}{3}}\right )}{a} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.07, size = 115, normalized size = 1.51 \[ -\frac {\ln \left (9\,a+9\,{\left (-a^3-x\,b^3\right )}^{1/3}\right )}{a}-\frac {\ln \left (\frac {9\,a\,{\left (-1+\sqrt {3}\,1{}\mathrm {i}\right )}^2}{4}+9\,{\left (-a^3-x\,b^3\right )}^{1/3}\right )\,\left (-1+\sqrt {3}\,1{}\mathrm {i}\right )}{2\,a}+\frac {\ln \left (\frac {9\,a\,{\left (1+\sqrt {3}\,1{}\mathrm {i}\right )}^2}{4}+9\,{\left (-a^3-x\,b^3\right )}^{1/3}\right )\,\left (1+\sqrt {3}\,1{}\mathrm {i}\right )}{2\,a} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [C] time = 1.83, size = 139, normalized size = 1.83 \[ \frac {\log {\left (- \frac {a e^{\frac {2 i \pi }{3}}}{b \sqrt [3]{\frac {a^{3}}{b^{3}} + x}} + 1 \right )} \Gamma \left (- \frac {1}{3}\right )}{3 a \Gamma \left (\frac {2}{3}\right )} - \frac {e^{\frac {i \pi }{3}} \log {\left (- \frac {a e^{\frac {4 i \pi }{3}}}{b \sqrt [3]{\frac {a^{3}}{b^{3}} + x}} + 1 \right )} \Gamma \left (- \frac {1}{3}\right )}{3 a \Gamma \left (\frac {2}{3}\right )} + \frac {e^{\frac {2 i \pi }{3}} \log {\left (- \frac {a e^{2 i \pi }}{b \sqrt [3]{\frac {a^{3}}{b^{3}} + x}} + 1 \right )} \Gamma \left (- \frac {1}{3}\right )}{3 a \Gamma \left (\frac {2}{3}\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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