Optimal. Leaf size=23 \[ \frac {\tan ^{-1}\left (\frac {\sqrt {\log ^2(x)-a^2}}{a}\right )}{a} \]
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Rubi [A] time = 0.10, antiderivative size = 23, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, integrand size = 22, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.136, Rules used = {266, 63, 203} \[ \frac {\tan ^{-1}\left (\frac {\sqrt {\log ^2(x)-a^2}}{a}\right )}{a} \]
Antiderivative was successfully verified.
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Rule 63
Rule 203
Rule 266
Rubi steps
\begin {align*} \int \frac {1}{x \log (x) \sqrt {-a^2+\log ^2(x)}} \, dx &=\operatorname {Subst}\left (\int \frac {1}{x \sqrt {-a^2+x^2}} \, dx,x,\log (x)\right )\\ &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {1}{x \sqrt {-a^2+x}} \, dx,x,\log ^2(x)\right )\\ &=\operatorname {Subst}\left (\int \frac {1}{a^2+x^2} \, dx,x,\sqrt {-a^2+\log ^2(x)}\right )\\ &=\frac {\tan ^{-1}\left (\frac {\sqrt {-a^2+\log ^2(x)}}{a}\right )}{a}\\ \end {align*}
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Mathematica [A] time = 0.02, size = 23, normalized size = 1.00 \[ \frac {\tan ^{-1}\left (\frac {\sqrt {\log ^2(x)-a^2}}{a}\right )}{a} \]
Antiderivative was successfully verified.
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IntegrateAlgebraic [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {1}{x \log (x) \sqrt {-a^2+\log ^2(x)}} \, dx \]
Verification is Not applicable to the result.
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fricas [A] time = 0.87, size = 27, normalized size = 1.17 \[ \frac {2 \, \arctan \left (\frac {\sqrt {-a^{2} + \log \relax (x)^{2}} - \log \relax (x)}{a}\right )}{a} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 1.63, size = 21, normalized size = 0.91 \[ \frac {\arctan \left (\frac {\sqrt {-a^{2} + \log \relax (x)^{2}}}{a}\right )}{a} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.02, size = 43, normalized size = 1.87
method | result | size |
derivativedivides | \(-\frac {\ln \left (\frac {-2 a^{2}+2 \sqrt {-a^{2}}\, \sqrt {-a^{2}+\ln \relax (x )^{2}}}{\ln \relax (x )}\right )}{\sqrt {-a^{2}}}\) | \(43\) |
default | \(-\frac {\ln \left (\frac {-2 a^{2}+2 \sqrt {-a^{2}}\, \sqrt {-a^{2}+\ln \relax (x )^{2}}}{\ln \relax (x )}\right )}{\sqrt {-a^{2}}}\) | \(43\) |
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.95, size = 13, normalized size = 0.57 \[ -\frac {\arcsin \left (\frac {a}{{\left | \log \relax (x) \right |}}\right )}{a} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.52, size = 25, normalized size = 1.09 \[ \frac {\mathrm {atan}\left (\frac {\sqrt {{\ln \relax (x)}^2-a^2}}{\sqrt {a^2}}\right )}{\sqrt {a^2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {1}{x \sqrt {- \left (a - \log {\relax (x )}\right ) \left (a + \log {\relax (x )}\right )} \log {\relax (x )}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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