Optimal. Leaf size=25 \[ \log \left (\frac {x^2 \log (-1+x \log (\log (2)))}{3 \left (-9+\frac {x}{4}\right )}\right ) \]
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Rubi [A]
time = 0.12, antiderivative size = 22, normalized size of antiderivative = 0.88, number of steps
used = 7, number of rules used = 5, integrand size = 72, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.069, Rules used = {6820, 78, 2437,
2339, 29} \begin {gather*} -\log (36-x)+2 \log (x)+\log (\log (x \log (\log (2))-1)) \end {gather*}
Antiderivative was successfully verified.
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Rule 29
Rule 78
Rule 2339
Rule 2437
Rule 6820
Rubi steps
\begin {gather*} \begin {aligned} \text {integral} &=\int \left (\frac {-72+x}{(-36+x) x}+\frac {\log (\log (2))}{(-1+x \log (\log (2))) \log (-1+x \log (\log (2)))}\right ) \, dx\\ &=\log (\log (2)) \int \frac {1}{(-1+x \log (\log (2))) \log (-1+x \log (\log (2)))} \, dx+\int \frac {-72+x}{(-36+x) x} \, dx\\ &=\int \left (\frac {1}{36-x}+\frac {2}{x}\right ) \, dx+\text {Subst}\left (\int \frac {1}{x \log (x)} \, dx,x,-1+x \log (\log (2))\right )\\ &=-\log (36-x)+2 \log (x)+\text {Subst}\left (\int \frac {1}{x} \, dx,x,\log (-1+x \log (\log (2)))\right )\\ &=-\log (36-x)+2 \log (x)+\log (\log (-1+x \log (\log (2))))\\ \end {aligned} \end {gather*}
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Mathematica [A]
time = 0.02, size = 22, normalized size = 0.88 \begin {gather*} -\log (36-x)+2 \log (x)+\log (\log (-1+x \log (\log (2)))) \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(48\) vs.
\(2(21)=42\).
time = 0.27, size = 49, normalized size = 1.96
method | result | size |
norman | \(2 \ln \left (x \right )-\ln \left (x -36\right )+\ln \left (\ln \left (x \ln \left (\ln \left (2\right )\right )-1\right )\right )\) | \(21\) |
risch | \(2 \ln \left (x \right )-\ln \left (x -36\right )+\ln \left (\ln \left (x \ln \left (\ln \left (2\right )\right )-1\right )\right )\) | \(21\) |
derivativedivides | \(\frac {\ln \left (\ln \left (2\right )\right ) \ln \left (\ln \left (x \ln \left (\ln \left (2\right )\right )-1\right )\right )+2 \ln \left (\ln \left (2\right )\right ) \ln \left (x \ln \left (\ln \left (2\right )\right )\right )-\ln \left (\ln \left (2\right )\right ) \ln \left (x \ln \left (\ln \left (2\right )\right )-36 \ln \left (\ln \left (2\right )\right )\right )}{\ln \left (\ln \left (2\right )\right )}\) | \(49\) |
default | \(\frac {\ln \left (\ln \left (2\right )\right ) \ln \left (\ln \left (x \ln \left (\ln \left (2\right )\right )-1\right )\right )+2 \ln \left (\ln \left (2\right )\right ) \ln \left (x \ln \left (\ln \left (2\right )\right )\right )-\ln \left (\ln \left (2\right )\right ) \ln \left (x \ln \left (\ln \left (2\right )\right )-36 \ln \left (\ln \left (2\right )\right )\right )}{\ln \left (\ln \left (2\right )\right )}\) | \(49\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.51, size = 20, normalized size = 0.80 \begin {gather*} -\log \left (x - 36\right ) + 2 \, \log \left (x\right ) + \log \left (\log \left (x \log \left (\log \left (2\right )\right ) - 1\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.31, size = 20, normalized size = 0.80 \begin {gather*} -\log \left (x - 36\right ) + 2 \, \log \left (x\right ) + \log \left (\log \left (x \log \left (\log \left (2\right )\right ) - 1\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.08, size = 20, normalized size = 0.80 \begin {gather*} 2 \log {\left (x \right )} - \log {\left (x - 36 \right )} + \log {\left (\log {\left (x \log {\left (\log {\left (2 \right )} \right )} - 1 \right )} \right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.44, size = 20, normalized size = 0.80 \begin {gather*} -\log \left (x - 36\right ) + 2 \, \log \left (x\right ) + \log \left (\log \left (x \log \left (\log \left (2\right )\right ) - 1\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.87, size = 20, normalized size = 0.80 \begin {gather*} 2\,\ln \left (x\right )-\ln \left (x-36\right )+\ln \left (\ln \left (x\,\ln \left (\ln \left (2\right )\right )-1\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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