Optimal. Leaf size=98 \[ \frac {b \log (x)}{3 a^{5/3}}-\frac {b \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x}\right )}{a^{5/3}}+\frac {2 b \tan ^{-1}\left (\frac {2 \sqrt [3]{a+b x}+\sqrt [3]{a}}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} a^{5/3}}-\frac {\sqrt [3]{a+b x}}{a x} \]
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Rubi [A] time = 0.03, antiderivative size = 98, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.385, Rules used = {51, 57, 617, 204, 31} \begin {gather*} \frac {b \log (x)}{3 a^{5/3}}-\frac {b \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x}\right )}{a^{5/3}}+\frac {2 b \tan ^{-1}\left (\frac {2 \sqrt [3]{a+b x}+\sqrt [3]{a}}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} a^{5/3}}-\frac {\sqrt [3]{a+b x}}{a x} \end {gather*}
Antiderivative was successfully verified.
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Rule 31
Rule 51
Rule 57
Rule 204
Rule 617
Rubi steps
\begin {align*} \int \frac {1}{x^2 (a+b x)^{2/3}} \, dx &=-\frac {\sqrt [3]{a+b x}}{a x}-\frac {(2 b) \int \frac {1}{x (a+b x)^{2/3}} \, dx}{3 a}\\ &=-\frac {\sqrt [3]{a+b x}}{a x}+\frac {b \log (x)}{3 a^{5/3}}+\frac {b \operatorname {Subst}\left (\int \frac {1}{\sqrt [3]{a}-x} \, dx,x,\sqrt [3]{a+b x}\right )}{a^{5/3}}+\frac {b \operatorname {Subst}\left (\int \frac {1}{a^{2/3}+\sqrt [3]{a} x+x^2} \, dx,x,\sqrt [3]{a+b x}\right )}{a^{4/3}}\\ &=-\frac {\sqrt [3]{a+b x}}{a x}+\frac {b \log (x)}{3 a^{5/3}}-\frac {b \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x}\right )}{a^{5/3}}-\frac {(2 b) \operatorname {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1+\frac {2 \sqrt [3]{a+b x}}{\sqrt [3]{a}}\right )}{a^{5/3}}\\ &=-\frac {\sqrt [3]{a+b x}}{a x}+\frac {2 b \tan ^{-1}\left (\frac {1+\frac {2 \sqrt [3]{a+b x}}{\sqrt [3]{a}}}{\sqrt {3}}\right )}{\sqrt {3} a^{5/3}}+\frac {b \log (x)}{3 a^{5/3}}-\frac {b \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x}\right )}{a^{5/3}}\\ \end {align*}
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Mathematica [C] time = 0.01, size = 31, normalized size = 0.32 \begin {gather*} \frac {3 b \sqrt [3]{a+b x} \, _2F_1\left (\frac {1}{3},2;\frac {4}{3};\frac {b x}{a}+1\right )}{a^2} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [A] time = 0.15, size = 128, normalized size = 1.31 \begin {gather*} -\frac {2 b \log \left (\sqrt [3]{a}-\sqrt [3]{a+b x}\right )}{3 a^{5/3}}+\frac {b \log \left (a^{2/3}+\sqrt [3]{a} \sqrt [3]{a+b x}+(a+b x)^{2/3}\right )}{3 a^{5/3}}+\frac {2 b \tan ^{-1}\left (\frac {2 \sqrt [3]{a+b x}}{\sqrt {3} \sqrt [3]{a}}+\frac {1}{\sqrt {3}}\right )}{\sqrt {3} a^{5/3}}-\frac {\sqrt [3]{a+b x}}{a x} \end {gather*}
Antiderivative was successfully verified.
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fricas [B] time = 0.69, size = 166, normalized size = 1.69 \begin {gather*} \frac {2 \, \sqrt {3} a b x \sqrt {-\left (-a^{2}\right )^{\frac {1}{3}}} \arctan \left (-\frac {{\left (\sqrt {3} \left (-a^{2}\right )^{\frac {1}{3}} a - 2 \, \sqrt {3} \left (-a^{2}\right )^{\frac {2}{3}} {\left (b x + a\right )}^{\frac {1}{3}}\right )} \sqrt {-\left (-a^{2}\right )^{\frac {1}{3}}}}{3 \, a^{2}}\right ) + \left (-a^{2}\right )^{\frac {2}{3}} b x \log \left ({\left (b x + a\right )}^{\frac {2}{3}} a - \left (-a^{2}\right )^{\frac {1}{3}} a + \left (-a^{2}\right )^{\frac {2}{3}} {\left (b x + a\right )}^{\frac {1}{3}}\right ) - 2 \, \left (-a^{2}\right )^{\frac {2}{3}} b x \log \left ({\left (b x + a\right )}^{\frac {1}{3}} a - \left (-a^{2}\right )^{\frac {2}{3}}\right ) - 3 \, {\left (b x + a\right )}^{\frac {1}{3}} a^{2}}{3 \, a^{3} x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 2.37, size = 108, normalized size = 1.10 \begin {gather*} \frac {\frac {2 \, \sqrt {3} b^{2} \arctan \left (\frac {\sqrt {3} {\left (2 \, {\left (b x + a\right )}^{\frac {1}{3}} + a^{\frac {1}{3}}\right )}}{3 \, a^{\frac {1}{3}}}\right )}{a^{\frac {5}{3}}} + \frac {b^{2} \log \left ({\left (b x + a\right )}^{\frac {2}{3}} + {\left (b x + a\right )}^{\frac {1}{3}} a^{\frac {1}{3}} + a^{\frac {2}{3}}\right )}{a^{\frac {5}{3}}} - \frac {2 \, b^{2} \log \left ({\left | {\left (b x + a\right )}^{\frac {1}{3}} - a^{\frac {1}{3}} \right |}\right )}{a^{\frac {5}{3}}} - \frac {3 \, {\left (b x + a\right )}^{\frac {1}{3}} b}{a x}}{3 \, b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 95, normalized size = 0.97 \begin {gather*} \frac {2 \sqrt {3}\, b \arctan \left (\frac {\sqrt {3}\, \left (\frac {2 \left (b x +a \right )^{\frac {1}{3}}}{a^{\frac {1}{3}}}+1\right )}{3}\right )}{3 a^{\frac {5}{3}}}-\frac {2 b \ln \left (-a^{\frac {1}{3}}+\left (b x +a \right )^{\frac {1}{3}}\right )}{3 a^{\frac {5}{3}}}+\frac {b \ln \left (a^{\frac {2}{3}}+\left (b x +a \right )^{\frac {1}{3}} a^{\frac {1}{3}}+\left (b x +a \right )^{\frac {2}{3}}\right )}{3 a^{\frac {5}{3}}}-\frac {\left (b x +a \right )^{\frac {1}{3}}}{a x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 2.95, size = 106, normalized size = 1.08 \begin {gather*} \frac {2 \, \sqrt {3} b \arctan \left (\frac {\sqrt {3} {\left (2 \, {\left (b x + a\right )}^{\frac {1}{3}} + a^{\frac {1}{3}}\right )}}{3 \, a^{\frac {1}{3}}}\right )}{3 \, a^{\frac {5}{3}}} - \frac {{\left (b x + a\right )}^{\frac {1}{3}} b}{{\left (b x + a\right )} a - a^{2}} + \frac {b \log \left ({\left (b x + a\right )}^{\frac {2}{3}} + {\left (b x + a\right )}^{\frac {1}{3}} a^{\frac {1}{3}} + a^{\frac {2}{3}}\right )}{3 \, a^{\frac {5}{3}}} - \frac {2 \, b \log \left ({\left (b x + a\right )}^{\frac {1}{3}} - a^{\frac {1}{3}}\right )}{3 \, a^{\frac {5}{3}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.13, size = 122, normalized size = 1.24 \begin {gather*} -\frac {{\left (a+b\,x\right )}^{1/3}}{a\,x}+\frac {\ln \left (\frac {3\,\left (b-\sqrt {3}\,b\,1{}\mathrm {i}\right )}{a^{2/3}}+\frac {6\,b\,{\left (a+b\,x\right )}^{1/3}}{a}\right )\,\left (b-\sqrt {3}\,b\,1{}\mathrm {i}\right )}{3\,a^{5/3}}+\frac {\ln \left (\frac {3\,\left (b+\sqrt {3}\,b\,1{}\mathrm {i}\right )}{a^{2/3}}+\frac {6\,b\,{\left (a+b\,x\right )}^{1/3}}{a}\right )\,\left (b+\sqrt {3}\,b\,1{}\mathrm {i}\right )}{3\,a^{5/3}}-\frac {2\,b\,\ln \left ({\left (a+b\,x\right )}^{1/3}-a^{1/3}\right )}{3\,a^{5/3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [C] time = 2.27, size = 830, normalized size = 8.47
result too large to display
Verification of antiderivative is not currently implemented for this CAS.
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