Optimal. Leaf size=67 \[ -\frac{i \sqrt{1+i a x}}{3 a \sqrt{1-i a x}}-\frac{i \sqrt{1+i a x}}{3 a (1-i a x)^{3/2}} \]
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Rubi [A] time = 0.0389113, antiderivative size = 67, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.125, Rules used = {5073, 45, 37} \[ -\frac{i \sqrt{1+i a x}}{3 a \sqrt{1-i a x}}-\frac{i \sqrt{1+i a x}}{3 a (1-i a x)^{3/2}} \]
Antiderivative was successfully verified.
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Rule 5073
Rule 45
Rule 37
Rubi steps
\begin{align*} \int \frac{e^{2 i \tan ^{-1}(a x)}}{\left (1+a^2 x^2\right )^{3/2}} \, dx &=\int \frac{1}{(1-i a x)^{5/2} \sqrt{1+i a x}} \, dx\\ &=-\frac{i \sqrt{1+i a x}}{3 a (1-i a x)^{3/2}}+\frac{1}{3} \int \frac{1}{(1-i a x)^{3/2} \sqrt{1+i a x}} \, dx\\ &=-\frac{i \sqrt{1+i a x}}{3 a (1-i a x)^{3/2}}-\frac{i \sqrt{1+i a x}}{3 a \sqrt{1-i a x}}\\ \end{align*}
Mathematica [A] time = 0.0125056, size = 48, normalized size = 0.72 \[ \frac{(2-i a x) \sqrt{1+i a x}}{3 a \sqrt{1-i a x} (a x+i)} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.062, size = 104, normalized size = 1.6 \begin{align*} -{a}^{2} \left ( -{\frac{x}{2\,{a}^{2}} \left ({a}^{2}{x}^{2}+1 \right ) ^{-{\frac{3}{2}}}}+{\frac{1}{2\,{a}^{2}} \left ({\frac{x}{3} \left ({a}^{2}{x}^{2}+1 \right ) ^{-{\frac{3}{2}}}}+{\frac{2\,x}{3}{\frac{1}{\sqrt{{a}^{2}{x}^{2}+1}}}} \right ) } \right ) -{\frac{{\frac{2\,i}{3}}}{a} \left ({a}^{2}{x}^{2}+1 \right ) ^{-{\frac{3}{2}}}}+{\frac{x}{3} \left ({a}^{2}{x}^{2}+1 \right ) ^{-{\frac{3}{2}}}}+{\frac{2\,x}{3}{\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 = 0.967046, size = 61, normalized size = 0.91 \begin{align*} \frac{x}{3 \, \sqrt{a^{2} x^{2} + 1}} + \frac{2 \, x}{3 \,{\left (a^{2} x^{2} + 1\right )}^{\frac{3}{2}}} - \frac{2 i}{3 \,{\left (a^{2} x^{2} + 1\right )}^{\frac{3}{2}} a} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.94631, size = 117, normalized size = 1.75 \begin{align*} \frac{a^{2} x^{2} + 2 i \, a x + \sqrt{a^{2} x^{2} + 1}{\left (a x + 2 i\right )} - 1}{3 \, a^{3} x^{2} + 6 i \, a^{2} x - 3 \, 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{5}{2}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.14777, size = 89, normalized size = 1.33 \begin{align*} \frac{2 \,{\left (3 \, a i{\left (\sqrt{a^{2} + \frac{1}{x^{2}}} - \frac{1}{x}\right )} - 2 \, a^{2} + 3 \,{\left (\sqrt{a^{2} + \frac{1}{x^{2}}} - \frac{1}{x}\right )}^{2}\right )}}{3 \,{\left (a i + \sqrt{a^{2} + \frac{1}{x^{2}}} - \frac{1}{x}\right )}^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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