Optimal. Leaf size=26 \[ -\frac {1}{x}+2 i a \log (x)-2 i a \log (i+a x) \]
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Rubi [A]
time = 0.02, antiderivative size = 26, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 2, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {5170, 78}
\begin {gather*} 2 i a \log (x)-2 i a \log (a x+i)-\frac {1}{x} \end {gather*}
Antiderivative was successfully verified.
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Rule 78
Rule 5170
Rubi steps
\begin {align*} \int \frac {e^{2 i \tan ^{-1}(a x)}}{x^2} \, dx &=\int \frac {1+i a x}{x^2 (1-i a x)} \, dx\\ &=\int \left (\frac {1}{x^2}+\frac {2 i a}{x}-\frac {2 i a^2}{i+a x}\right ) \, dx\\ &=-\frac {1}{x}+2 i a \log (x)-2 i a \log (i+a x)\\ \end {align*}
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Mathematica [A]
time = 0.01, size = 26, normalized size = 1.00 \begin {gather*} -\frac {1}{x}+2 i a \log (x)-2 i a \log (i+a x) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.11, size = 43, normalized size = 1.65
method | result | size |
risch | \(-\frac {1}{x}-2 a \arctan \left (a x \right )-i a \ln \left (a^{2} x^{2}+1\right )+2 i a \ln \left (x \right )\) | \(34\) |
default | \(-2 a^{2} \left (\frac {i \ln \left (a^{2} x^{2}+1\right )}{2 a}+\frac {\arctan \left (a x \right )}{a}\right )-\frac {1}{x}+2 i a \ln \left (x \right )\) | \(43\) |
meijerg | \(\frac {a^{2} \left (-\frac {2}{x \sqrt {a^{2}}}-\frac {2 a \arctan \left (a x \right )}{\sqrt {a^{2}}}\right )}{2 \sqrt {a^{2}}}+i a \left (-\ln \left (a^{2} x^{2}+1\right )+2 \ln \left (x \right )+\ln \left (a^{2}\right )\right )-a \arctan \left (a x \right )\) | \(67\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.53, size = 31, normalized size = 1.19 \begin {gather*} -2 \, a \arctan \left (a x\right ) - i \, a \log \left (a^{2} x^{2} + 1\right ) + 2 i \, a \log \left (x\right ) - \frac {1}{x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 2.73, size = 26, normalized size = 1.00 \begin {gather*} \frac {2 i \, a x \log \left (x\right ) - 2 i \, a x \log \left (\frac {a x + i}{a}\right ) - 1}{x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.08, size = 32, normalized size = 1.23 \begin {gather*} - 2 a \left (- i \log {\left (4 a^{2} x \right )} + i \log {\left (4 a^{2} x + 4 i a \right )}\right ) - \frac {1}{x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.42, size = 21, normalized size = 0.81 \begin {gather*} -2 i \, a \log \left (a x + i\right ) + 2 i \, a \log \left ({\left | x \right |}\right ) - \frac {1}{x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.06, size = 17, normalized size = 0.65 \begin {gather*} -4\,a\,\mathrm {atan}\left (2\,a\,x+1{}\mathrm {i}\right )-\frac {1}{x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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