Optimal. Leaf size=22 \[ \frac {\log (x)}{a^3}-\frac {\log \left (a^3+x^3\right )}{3 a^3} \]
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Rubi [A] time = 0.01, antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {266, 36, 29, 31} \[ \frac {\log (x)}{a^3}-\frac {\log \left (a^3+x^3\right )}{3 a^3} \]
Antiderivative was successfully verified.
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Rule 29
Rule 31
Rule 36
Rule 266
Rubi steps
\begin {align*} \int \frac {1}{x \left (a^3+x^3\right )} \, dx &=\frac {1}{3} \operatorname {Subst}\left (\int \frac {1}{x \left (a^3+x\right )} \, dx,x,x^3\right )\\ &=\frac {\operatorname {Subst}\left (\int \frac {1}{x} \, dx,x,x^3\right )}{3 a^3}-\frac {\operatorname {Subst}\left (\int \frac {1}{a^3+x} \, dx,x,x^3\right )}{3 a^3}\\ &=\frac {\log (x)}{a^3}-\frac {\log \left (a^3+x^3\right )}{3 a^3}\\ \end {align*}
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Mathematica [A] time = 0.00, size = 22, normalized size = 1.00 \[ \frac {\log (x)}{a^3}-\frac {\log \left (a^3+x^3\right )}{3 a^3} \]
Antiderivative was successfully verified.
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IntegrateAlgebraic [A] time = 0.01, size = 22, normalized size = 1.00 \[ \frac {\log (x)}{a^3}-\frac {\log \left (a^3+x^3\right )}{3 a^3} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.89, size = 18, normalized size = 0.82 \[ -\frac {\log \left (a^{3} + x^{3}\right ) - 3 \, \log \relax (x)}{3 \, a^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.87, size = 22, normalized size = 1.00 \[ -\frac {\log \left ({\left | a^{3} + x^{3} \right |}\right )}{3 \, a^{3}} + \frac {\log \left ({\left | x \right |}\right )}{a^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.27, size = 21, normalized size = 0.95
method | result | size |
risch | \(\frac {\ln \relax (x )}{a^{3}}-\frac {\ln \left (a^{3}+x^{3}\right )}{3 a^{3}}\) | \(21\) |
default | \(-\frac {\ln \left (a^{2}-a x +x^{2}\right )}{3 a^{3}}+\frac {\ln \relax (x )}{a^{3}}-\frac {\ln \left (a +x \right )}{3 a^{3}}\) | \(34\) |
norman | \(-\frac {\ln \left (a^{2}-a x +x^{2}\right )}{3 a^{3}}+\frac {\ln \relax (x )}{a^{3}}-\frac {\ln \left (a +x \right )}{3 a^{3}}\) | \(34\) |
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.43, size = 23, normalized size = 1.05 \[ -\frac {\log \left (a^{3} + x^{3}\right )}{3 \, a^{3}} + \frac {\log \left (x^{3}\right )}{3 \, a^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.25, size = 18, normalized size = 0.82 \[ -\frac {\ln \left (a^3+x^3\right )-3\,\ln \relax (x)}{3\,a^3} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.21, size = 19, normalized size = 0.86 \[ \frac {\log {\relax (x )}}{a^{3}} - \frac {\log {\left (a^{3} + x^{3} \right )}}{3 a^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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