Optimal. Leaf size=19 \[ -\frac {1}{3}+\log (4)+\frac {2}{\log \left (2 x+\log ^2(2)\right )} \]
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Rubi [A]
time = 0.02, antiderivative size = 13, normalized size of antiderivative = 0.68, number of steps
used = 4, number of rules used = 4, integrand size = 23, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.174, Rules used = {12, 2437, 2339,
30} \begin {gather*} \frac {2}{\log \left (2 x+\log ^2(2)\right )} \end {gather*}
Antiderivative was successfully verified.
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Rule 12
Rule 30
Rule 2339
Rule 2437
Rubi steps
\begin {gather*} \begin {aligned} \text {integral} &=-\left (4 \int \frac {1}{\left (2 x+\log ^2(2)\right ) \log ^2\left (2 x+\log ^2(2)\right )} \, dx\right )\\ &=-\left (2 \text {Subst}\left (\int \frac {1}{x \log ^2(x)} \, dx,x,2 x+\log ^2(2)\right )\right )\\ &=-\left (2 \text {Subst}\left (\int \frac {1}{x^2} \, dx,x,\log \left (2 x+\log ^2(2)\right )\right )\right )\\ &=\frac {2}{\log \left (2 x+\log ^2(2)\right )}\\ \end {aligned} \end {gather*}
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Mathematica [A]
time = 0.01, size = 13, normalized size = 0.68 \begin {gather*} \frac {2}{\log \left (2 x+\log ^2(2)\right )} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.82, size = 14, normalized size = 0.74
method | result | size |
derivativedivides | \(\frac {2}{\ln \left (\ln \left (2\right )^{2}+2 x \right )}\) | \(14\) |
default | \(\frac {2}{\ln \left (\ln \left (2\right )^{2}+2 x \right )}\) | \(14\) |
norman | \(\frac {2}{\ln \left (\ln \left (2\right )^{2}+2 x \right )}\) | \(14\) |
risch | \(\frac {2}{\ln \left (\ln \left (2\right )^{2}+2 x \right )}\) | \(14\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.26, size = 13, normalized size = 0.68 \begin {gather*} \frac {2}{\log \left (\log \left (2\right )^{2} + 2 \, x\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.34, size = 13, normalized size = 0.68 \begin {gather*} \frac {2}{\log \left (\log \left (2\right )^{2} + 2 \, x\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.04, size = 10, normalized size = 0.53 \begin {gather*} \frac {2}{\log {\left (2 x + \log {\left (2 \right )}^{2} \right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.42, size = 13, normalized size = 0.68 \begin {gather*} \frac {2}{\log \left (\log \left (2\right )^{2} + 2 \, x\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.33, size = 13, normalized size = 0.68 \begin {gather*} \frac {2}{\ln \left (2\,x+{\ln \left (2\right )}^2\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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