Optimal. Leaf size=22 \[ -2 \tanh ^{-1}\left (\sqrt {1+\log (x)}\right )+2 \sqrt {1+\log (x)} \]
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Rubi [A]
time = 0.04, antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 4, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {2412, 52, 65,
213} \begin {gather*} 2 \sqrt {\log (x)+1}-2 \tanh ^{-1}\left (\sqrt {\log (x)+1}\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 52
Rule 65
Rule 213
Rule 2412
Rubi steps
\begin {align*} \int \frac {\sqrt {1+\log (x)}}{x \log (x)} \, dx &=\text {Subst}\left (\int \frac {\sqrt {1+x}}{x} \, dx,x,\log (x)\right )\\ &=2 \sqrt {1+\log (x)}+\text {Subst}\left (\int \frac {1}{x \sqrt {1+x}} \, dx,x,\log (x)\right )\\ &=2 \sqrt {1+\log (x)}+2 \text {Subst}\left (\int \frac {1}{-1+x^2} \, dx,x,\sqrt {1+\log (x)}\right )\\ &=-2 \tanh ^{-1}\left (\sqrt {1+\log (x)}\right )+2 \sqrt {1+\log (x)}\\ \end {align*}
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Mathematica [A]
time = 0.03, size = 22, normalized size = 1.00 \begin {gather*} -2 \tanh ^{-1}\left (\sqrt {1+\log (x)}\right )+2 \sqrt {1+\log (x)} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.01, size = 30, normalized size = 1.36
method | result | size |
derivativedivides | \(2 \sqrt {1+\ln \left (x \right )}+\ln \left (\sqrt {1+\ln \left (x \right )}-1\right )-\ln \left (\sqrt {1+\ln \left (x \right )}+1\right )\) | \(30\) |
default | \(2 \sqrt {1+\ln \left (x \right )}+\ln \left (\sqrt {1+\ln \left (x \right )}-1\right )-\ln \left (\sqrt {1+\ln \left (x \right )}+1\right )\) | \(30\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.28, size = 29, normalized size = 1.32 \begin {gather*} 2 \, \sqrt {\log \left (x\right ) + 1} - \log \left (\sqrt {\log \left (x\right ) + 1} + 1\right ) + \log \left (\sqrt {\log \left (x\right ) + 1} - 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.37, size = 29, normalized size = 1.32 \begin {gather*} 2 \, \sqrt {\log \left (x\right ) + 1} - \log \left (\sqrt {\log \left (x\right ) + 1} + 1\right ) + \log \left (\sqrt {\log \left (x\right ) + 1} - 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 2.07, size = 32, normalized size = 1.45 \begin {gather*} 2 \sqrt {\log {\left (x \right )} + 1} + \log {\left (\sqrt {\log {\left (x \right )} + 1} - 1 \right )} - \log {\left (\sqrt {\log {\left (x \right )} + 1} + 1 \right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F(-1)] Timed out
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Timed out} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.41, size = 18, normalized size = 0.82 \begin {gather*} 2\,\sqrt {\ln \left (x\right )+1}-2\,\mathrm {atanh}\left (\sqrt {\ln \left (x\right )+1}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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