Optimal. Leaf size=16 \[ 5 \log \left (-\frac {10}{\log \left (\log \left (-e^x+x\right )\right )}\right ) \]
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Rubi [A] time = 0.15, antiderivative size = 12, normalized size of antiderivative = 0.75, number of steps used = 1, number of rules used = 1, integrand size = 38, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.026, Rules used = {6684} \begin {gather*} -5 \log \left (\log \left (\log \left (x-e^x\right )\right )\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 6684
Rubi steps
\begin {gather*} \begin {aligned} \text {integral} &=-5 \log \left (\log \left (\log \left (-e^x+x\right )\right )\right )\\ \end {aligned} \end {gather*}
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Mathematica [A] time = 0.13, size = 12, normalized size = 0.75 \begin {gather*} -5 \log \left (\log \left (\log \left (-e^x+x\right )\right )\right ) \end {gather*}
Antiderivative was successfully verified.
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fricas [A] time = 1.15, size = 11, normalized size = 0.69 \begin {gather*} -5 \, \log \left (\log \left (\log \left (x - e^{x}\right )\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.79, size = 11, normalized size = 0.69 \begin {gather*} -5 \, \log \left (\log \left (\log \left (x - e^{x}\right )\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.02, size = 12, normalized size = 0.75
method | result | size |
risch | \(-5 \ln \left (\ln \left (\ln \left (x -{\mathrm e}^{x}\right )\right )\right )\) | \(12\) |
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.42, size = 11, normalized size = 0.69 \begin {gather*} -5 \, \log \left (\log \left (\log \left (x - e^{x}\right )\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 7.57, size = 11, normalized size = 0.69 \begin {gather*} -5\,\ln \left (\ln \left (\ln \left (x-{\mathrm {e}}^x\right )\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.52, size = 12, normalized size = 0.75 \begin {gather*} - 5 \log {\left (\log {\left (\log {\left (x - e^{x} \right )} \right )} \right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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