Optimal. Leaf size=54 \[ \frac {1}{6 a \left (a+b x^3\right )^2}+\frac {1}{3 a^2 \left (a+b x^3\right )}+\frac {\log (x)}{a^3}-\frac {\log \left (a+b x^3\right )}{3 a^3} \]
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Rubi [A]
time = 0.03, antiderivative size = 54, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {272, 46}
\begin {gather*} -\frac {\log \left (a+b x^3\right )}{3 a^3}+\frac {\log (x)}{a^3}+\frac {1}{3 a^2 \left (a+b x^3\right )}+\frac {1}{6 a \left (a+b x^3\right )^2} \end {gather*}
Antiderivative was successfully verified.
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Rule 46
Rule 272
Rubi steps
\begin {align*} \int \frac {1}{x \left (a+b x^3\right )^3} \, dx &=\frac {1}{3} \text {Subst}\left (\int \frac {1}{x (a+b x)^3} \, dx,x,x^3\right )\\ &=\frac {1}{3} \text {Subst}\left (\int \left (\frac {1}{a^3 x}-\frac {b}{a (a+b x)^3}-\frac {b}{a^2 (a+b x)^2}-\frac {b}{a^3 (a+b x)}\right ) \, dx,x,x^3\right )\\ &=\frac {1}{6 a \left (a+b x^3\right )^2}+\frac {1}{3 a^2 \left (a+b x^3\right )}+\frac {\log (x)}{a^3}-\frac {\log \left (a+b x^3\right )}{3 a^3}\\ \end {align*}
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Mathematica [A]
time = 0.03, size = 43, normalized size = 0.80 \begin {gather*} \frac {\frac {a \left (3 a+2 b x^3\right )}{\left (a+b x^3\right )^2}+6 \log (x)-2 \log \left (a+b x^3\right )}{6 a^3} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.14, size = 59, normalized size = 1.09
method | result | size |
risch | \(\frac {\frac {b \,x^{3}}{3 a^{2}}+\frac {1}{2 a}}{\left (b \,x^{3}+a \right )^{2}}+\frac {\ln \left (x \right )}{a^{3}}-\frac {\ln \left (b \,x^{3}+a \right )}{3 a^{3}}\) | \(46\) |
norman | \(\frac {-\frac {2 b \,x^{3}}{3 a^{2}}-\frac {b^{2} x^{6}}{2 a^{3}}}{\left (b \,x^{3}+a \right )^{2}}+\frac {\ln \left (x \right )}{a^{3}}-\frac {\ln \left (b \,x^{3}+a \right )}{3 a^{3}}\) | \(52\) |
default | \(-\frac {b \left (-\frac {a}{b \left (b \,x^{3}+a \right )}-\frac {a^{2}}{2 b \left (b \,x^{3}+a \right )^{2}}+\frac {\ln \left (b \,x^{3}+a \right )}{b}\right )}{3 a^{3}}+\frac {\ln \left (x \right )}{a^{3}}\) | \(59\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.30, size = 60, normalized size = 1.11 \begin {gather*} \frac {2 \, b x^{3} + 3 \, a}{6 \, {\left (a^{2} b^{2} x^{6} + 2 \, a^{3} b x^{3} + a^{4}\right )}} - \frac {\log \left (b x^{3} + a\right )}{3 \, a^{3}} + \frac {\log \left (x^{3}\right )}{3 \, a^{3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.35, size = 90, normalized size = 1.67 \begin {gather*} \frac {2 \, a b x^{3} + 3 \, a^{2} - 2 \, {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \log \left (b x^{3} + a\right ) + 6 \, {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \log \left (x\right )}{6 \, {\left (a^{3} b^{2} x^{6} + 2 \, a^{4} b x^{3} + a^{5}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.23, size = 56, normalized size = 1.04 \begin {gather*} \frac {3 a + 2 b x^{3}}{6 a^{4} + 12 a^{3} b x^{3} + 6 a^{2} b^{2} x^{6}} + \frac {\log {\left (x \right )}}{a^{3}} - \frac {\log {\left (\frac {a}{b} + x^{3} \right )}}{3 a^{3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 1.55, size = 57, normalized size = 1.06 \begin {gather*} -\frac {\log \left ({\left | b x^{3} + a \right |}\right )}{3 \, a^{3}} + \frac {\log \left ({\left | x \right |}\right )}{a^{3}} + \frac {3 \, b^{2} x^{6} + 8 \, a b x^{3} + 6 \, a^{2}}{6 \, {\left (b x^{3} + a\right )}^{2} a^{3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.07, size = 56, normalized size = 1.04 \begin {gather*} \frac {\ln \left (x\right )}{a^3}+\frac {\frac {1}{2\,a}+\frac {b\,x^3}{3\,a^2}}{a^2+2\,a\,b\,x^3+b^2\,x^6}-\frac {\ln \left (b\,x^3+a\right )}{3\,a^3} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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