Optimal. Leaf size=41 \[ -\frac{\sinh ^{-1}(a x)}{a}-\frac{2 i \sqrt{1+i a x}}{a \sqrt{1-i a x}} \]
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Rubi [A] time = 0.0346615, antiderivative size = 41, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.167, Rules used = {5073, 47, 41, 215} \[ -\frac{\sinh ^{-1}(a x)}{a}-\frac{2 i \sqrt{1+i a x}}{a \sqrt{1-i a x}} \]
Antiderivative was successfully verified.
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Rule 5073
Rule 47
Rule 41
Rule 215
Rubi steps
\begin{align*} \int \frac{e^{2 i \tan ^{-1}(a x)}}{\sqrt{1+a^2 x^2}} \, dx &=\int \frac{\sqrt{1+i a x}}{(1-i a x)^{3/2}} \, dx\\ &=-\frac{2 i \sqrt{1+i a x}}{a \sqrt{1-i a x}}-\int \frac{1}{\sqrt{1-i a x} \sqrt{1+i a x}} \, dx\\ &=-\frac{2 i \sqrt{1+i a x}}{a \sqrt{1-i a x}}-\int \frac{1}{\sqrt{1+a^2 x^2}} \, dx\\ &=-\frac{2 i \sqrt{1+i a x}}{a \sqrt{1-i a x}}-\frac{\sinh ^{-1}(a x)}{a}\\ \end{align*}
Mathematica [A] time = 0.0296359, size = 52, normalized size = 1.27 \[ -\frac{2 i \left (\frac{\sqrt{1+i a x}}{\sqrt{1-i a x}}+\sin ^{-1}\left (\frac{\sqrt{1-i a x}}{\sqrt{2}}\right )\right )}{a} \]
Warning: Unable to verify antiderivative.
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Maple [A] time = 0.064, size = 63, normalized size = 1.5 \begin{align*} 2\,{\frac{x}{\sqrt{{a}^{2}{x}^{2}+1}}}-{\ln \left ({{a}^{2}x{\frac{1}{\sqrt{{a}^{2}}}}}+\sqrt{{a}^{2}{x}^{2}+1} \right ){\frac{1}{\sqrt{{a}^{2}}}}}-{\frac{2\,i}{a}{\frac{1}{\sqrt{{a}^{2}{x}^{2}+1}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 0.988022, size = 66, normalized size = 1.61 \begin{align*} \frac{2 \, x}{\sqrt{a^{2} x^{2} + 1}} - \frac{\operatorname{arsinh}\left (\frac{a^{2} x}{\sqrt{a^{2}}}\right )}{\sqrt{a^{2}}} - \frac{2 i}{\sqrt{a^{2} x^{2} + 1} a} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.76655, size = 126, normalized size = 3.07 \begin{align*} \frac{2 \, a x +{\left (a x + i\right )} \log \left (-a x + \sqrt{a^{2} x^{2} + 1}\right ) + 2 \, \sqrt{a^{2} x^{2} + 1} + 2 i}{a^{2} x + i \, a} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\left (i a x + 1\right )^{2}}{\left (a^{2} x^{2} + 1\right )^{\frac{3}{2}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \mathit{undef} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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