Optimal. Leaf size=235 \[ \frac {x \left (a+b x^3\right )}{b \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{3 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}+\frac {\sqrt [3]{a} \left (a+b x^3\right ) \tan ^{-1}\left (\frac {\sqrt [3]{a}-2 \sqrt [3]{b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}+\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{6 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}} \]
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Rubi [A] time = 0.11, antiderivative size = 235, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 8, integrand size = 26, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {1355, 321, 200, 31, 634, 617, 204, 628} \begin {gather*} \frac {x \left (a+b x^3\right )}{b \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{3 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}+\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{6 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}+\frac {\sqrt [3]{a} \left (a+b x^3\right ) \tan ^{-1}\left (\frac {\sqrt [3]{a}-2 \sqrt [3]{b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}} \end {gather*}
Antiderivative was successfully verified.
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Rule 31
Rule 200
Rule 204
Rule 321
Rule 617
Rule 628
Rule 634
Rule 1355
Rubi steps
\begin {align*} \int \frac {x^3}{\sqrt {a^2+2 a b x^3+b^2 x^6}} \, dx &=\frac {\left (a b+b^2 x^3\right ) \int \frac {x^3}{a b+b^2 x^3} \, dx}{\sqrt {a^2+2 a b x^3+b^2 x^6}}\\ &=\frac {x \left (a+b x^3\right )}{b \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\left (a \left (a b+b^2 x^3\right )\right ) \int \frac {1}{a b+b^2 x^3} \, dx}{b \sqrt {a^2+2 a b x^3+b^2 x^6}}\\ &=\frac {x \left (a+b x^3\right )}{b \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\left (\sqrt [3]{a} \left (a b+b^2 x^3\right )\right ) \int \frac {1}{\sqrt [3]{a} \sqrt [3]{b}+b^{2/3} x} \, dx}{3 b^{5/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\left (\sqrt [3]{a} \left (a b+b^2 x^3\right )\right ) \int \frac {2 \sqrt [3]{a} \sqrt [3]{b}-b^{2/3} x}{a^{2/3} b^{2/3}-\sqrt [3]{a} b x+b^{4/3} x^2} \, dx}{3 b^{5/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}\\ &=\frac {x \left (a+b x^3\right )}{b \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{3 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}+\frac {\left (\sqrt [3]{a} \left (a b+b^2 x^3\right )\right ) \int \frac {-\sqrt [3]{a} b+2 b^{4/3} x}{a^{2/3} b^{2/3}-\sqrt [3]{a} b x+b^{4/3} x^2} \, dx}{6 b^{7/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\left (a^{2/3} \left (a b+b^2 x^3\right )\right ) \int \frac {1}{a^{2/3} b^{2/3}-\sqrt [3]{a} b x+b^{4/3} x^2} \, dx}{2 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}\\ &=\frac {x \left (a+b x^3\right )}{b \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{3 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}+\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{6 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\left (\sqrt [3]{a} \left (a b+b^2 x^3\right )\right ) \operatorname {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1-\frac {2 \sqrt [3]{b} x}{\sqrt [3]{a}}\right )}{b^{7/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}\\ &=\frac {x \left (a+b x^3\right )}{b \sqrt {a^2+2 a b x^3+b^2 x^6}}+\frac {\sqrt [3]{a} \left (a+b x^3\right ) \tan ^{-1}\left (\frac {\sqrt [3]{a}-2 \sqrt [3]{b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}-\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{3 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}+\frac {\sqrt [3]{a} \left (a+b x^3\right ) \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{6 b^{4/3} \sqrt {a^2+2 a b x^3+b^2 x^6}}\\ \end {align*}
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Mathematica [A] time = 0.03, size = 128, normalized size = 0.54 \begin {gather*} \frac {\left (a+b x^3\right ) \left (\sqrt [3]{a} \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )-2 \sqrt [3]{a} \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )+2 \sqrt {3} \sqrt [3]{a} \tan ^{-1}\left (\frac {1-\frac {2 \sqrt [3]{b} x}{\sqrt [3]{a}}}{\sqrt {3}}\right )+6 \sqrt [3]{b} x\right )}{6 b^{4/3} \sqrt {\left (a+b x^3\right )^2}} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [A] time = 6.52, size = 139, normalized size = 0.59 \begin {gather*} \frac {\left (a+b x^3\right ) \left (\frac {\sqrt [3]{a} \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{6 b^{4/3}}-\frac {\sqrt [3]{a} \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{3 b^{4/3}}+\frac {\sqrt [3]{a} \tan ^{-1}\left (\frac {1}{\sqrt {3}}-\frac {2 \sqrt [3]{b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} b^{4/3}}+\frac {x}{b}\right )}{\sqrt {\left (a+b x^3\right )^2}} \end {gather*}
Antiderivative was successfully verified.
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fricas [A] time = 1.17, size = 106, normalized size = 0.45 \begin {gather*} \frac {2 \, \sqrt {3} \left (-\frac {a}{b}\right )^{\frac {1}{3}} \arctan \left (\frac {2 \, \sqrt {3} b x \left (-\frac {a}{b}\right )^{\frac {2}{3}} - \sqrt {3} a}{3 \, a}\right ) - \left (-\frac {a}{b}\right )^{\frac {1}{3}} \log \left (x^{2} + x \left (-\frac {a}{b}\right )^{\frac {1}{3}} + \left (-\frac {a}{b}\right )^{\frac {2}{3}}\right ) + 2 \, \left (-\frac {a}{b}\right )^{\frac {1}{3}} \log \left (x - \left (-\frac {a}{b}\right )^{\frac {1}{3}}\right ) + 6 \, x}{6 \, b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.41, size = 143, normalized size = 0.61 \begin {gather*} \frac {\left (-\frac {a}{b}\right )^{\frac {1}{3}} \log \left ({\left | x - \left (-\frac {a}{b}\right )^{\frac {1}{3}} \right |}\right ) \mathrm {sgn}\left (b x^{3} + a\right )}{3 \, b} + \frac {x \mathrm {sgn}\left (b x^{3} + a\right )}{b} - \frac {\sqrt {3} \left (-a b^{2}\right )^{\frac {1}{3}} \arctan \left (\frac {\sqrt {3} {\left (2 \, x + \left (-\frac {a}{b}\right )^{\frac {1}{3}}\right )}}{3 \, \left (-\frac {a}{b}\right )^{\frac {1}{3}}}\right ) \mathrm {sgn}\left (b x^{3} + a\right )}{3 \, b^{2}} - \frac {\left (-a b^{2}\right )^{\frac {1}{3}} \log \left (x^{2} + x \left (-\frac {a}{b}\right )^{\frac {1}{3}} + \left (-\frac {a}{b}\right )^{\frac {2}{3}}\right ) \mathrm {sgn}\left (b x^{3} + a\right )}{6 \, b^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 110, normalized size = 0.47 \begin {gather*} \frac {\left (b \,x^{3}+a \right ) \left (2 \sqrt {3}\, a \arctan \left (\frac {\sqrt {3}\, \left (-2 x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right )-2 a \ln \left (x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )+a \ln \left (x^{2}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x +\left (\frac {a}{b}\right )^{\frac {2}{3}}\right )+6 \left (\frac {a}{b}\right )^{\frac {2}{3}} b x \right )}{6 \sqrt {\left (b \,x^{3}+a \right )^{2}}\, \left (\frac {a}{b}\right )^{\frac {2}{3}} b^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 1.36, size = 106, normalized size = 0.45 \begin {gather*} \frac {x}{b} - \frac {\sqrt {3} a \arctan \left (\frac {\sqrt {3} {\left (2 \, x - \left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}}{3 \, \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{3 \, b^{2} \left (\frac {a}{b}\right )^{\frac {2}{3}}} + \frac {a \log \left (x^{2} - x \left (\frac {a}{b}\right )^{\frac {1}{3}} + \left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{6 \, b^{2} \left (\frac {a}{b}\right )^{\frac {2}{3}}} - \frac {a \log \left (x + \left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 \, b^{2} \left (\frac {a}{b}\right )^{\frac {2}{3}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.00 \begin {gather*} \int \frac {x^3}{\sqrt {{\left (b\,x^3+a\right )}^2}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.20, size = 22, normalized size = 0.09 \begin {gather*} \operatorname {RootSum} {\left (27 t^{3} b^{4} + a, \left (t \mapsto t \log {\left (- 3 t b + x \right )} \right )\right )} + \frac {x}{b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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