Optimal. Leaf size=53 \[ -\frac{\tanh ^{-1}\left (\frac{\sqrt{a \sec ^2(x)}}{\sqrt{a}}\right )}{a^{3/2}}+\frac{1}{a \sqrt{a \sec ^2(x)}}+\frac{1}{3 \left (a \sec ^2(x)\right )^{3/2}} \]
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Rubi [A] time = 0.0909338, antiderivative size = 53, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 5, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.333, Rules used = {3657, 4124, 51, 63, 207} \[ -\frac{\tanh ^{-1}\left (\frac{\sqrt{a \sec ^2(x)}}{\sqrt{a}}\right )}{a^{3/2}}+\frac{1}{a \sqrt{a \sec ^2(x)}}+\frac{1}{3 \left (a \sec ^2(x)\right )^{3/2}} \]
Antiderivative was successfully verified.
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Rule 3657
Rule 4124
Rule 51
Rule 63
Rule 207
Rubi steps
\begin{align*} \int \frac{\cot (x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx &=\int \frac{\cot (x)}{\left (a \sec ^2(x)\right )^{3/2}} \, dx\\ &=\frac{1}{2} a \operatorname{Subst}\left (\int \frac{1}{(-1+x) (a x)^{5/2}} \, dx,x,\sec ^2(x)\right )\\ &=\frac{1}{3 \left (a \sec ^2(x)\right )^{3/2}}+\frac{1}{2} \operatorname{Subst}\left (\int \frac{1}{(-1+x) (a x)^{3/2}} \, dx,x,\sec ^2(x)\right )\\ &=\frac{1}{3 \left (a \sec ^2(x)\right )^{3/2}}+\frac{1}{a \sqrt{a \sec ^2(x)}}+\frac{\operatorname{Subst}\left (\int \frac{1}{(-1+x) \sqrt{a x}} \, dx,x,\sec ^2(x)\right )}{2 a}\\ &=\frac{1}{3 \left (a \sec ^2(x)\right )^{3/2}}+\frac{1}{a \sqrt{a \sec ^2(x)}}+\frac{\operatorname{Subst}\left (\int \frac{1}{-1+\frac{x^2}{a}} \, dx,x,\sqrt{a \sec ^2(x)}\right )}{a^2}\\ &=-\frac{\tanh ^{-1}\left (\frac{\sqrt{a \sec ^2(x)}}{\sqrt{a}}\right )}{a^{3/2}}+\frac{1}{3 \left (a \sec ^2(x)\right )^{3/2}}+\frac{1}{a \sqrt{a \sec ^2(x)}}\\ \end{align*}
Mathematica [A] time = 0.0584834, size = 47, normalized size = 0.89 \[ \frac{\cos (3 x) \sec (x)+12 \sec (x) \left (\log \left (\sin \left (\frac{x}{2}\right )\right )-\log \left (\cos \left (\frac{x}{2}\right )\right )\right )+15}{12 a \sqrt{a \sec ^2(x)}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.073, size = 38, normalized size = 0.7 \begin{align*}{\frac{1}{3\, \left ( \cos \left ( x \right ) \right ) ^{3}} \left ( \left ( \cos \left ( x \right ) \right ) ^{3}+3\,\cos \left ( x \right ) +3\,\ln \left ( -{\frac{\cos \left ( x \right ) -1}{\sin \left ( x \right ) }} \right ) +4 \right ) \left ({\frac{a}{ \left ( \cos \left ( x \right ) \right ) ^{2}}} \right ) ^{-{\frac{3}{2}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.91696, size = 65, normalized size = 1.23 \begin{align*} \frac{\cos \left (3 \, x\right ) + 15 \, \cos \left (x\right ) - 6 \, \log \left (\cos \left (x\right )^{2} + \sin \left (x\right )^{2} + 2 \, \cos \left (x\right ) + 1\right ) + 6 \, \log \left (\cos \left (x\right )^{2} + \sin \left (x\right )^{2} - 2 \, \cos \left (x\right ) + 1\right )}{12 \, a^{\frac{3}{2}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 1.60905, size = 258, normalized size = 4.87 \begin{align*} \frac{3 \,{\left (\tan \left (x\right )^{4} + 2 \, \tan \left (x\right )^{2} + 1\right )} \sqrt{a} \log \left (\frac{a \tan \left (x\right )^{2} - 2 \, \sqrt{a \tan \left (x\right )^{2} + a} \sqrt{a} + 2 \, a}{\tan \left (x\right )^{2}}\right ) + 2 \, \sqrt{a \tan \left (x\right )^{2} + a}{\left (3 \, \tan \left (x\right )^{2} + 4\right )}}{6 \,{\left (a^{2} \tan \left (x\right )^{4} + 2 \, a^{2} \tan \left (x\right )^{2} + a^{2}\right )}} \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{\cot{\left (x \right )}}{\left (a \left (\tan ^{2}{\left (x \right )} + 1\right )\right )^{\frac{3}{2}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.09109, size = 76, normalized size = 1.43 \begin{align*} \frac{1}{3} \, a{\left (\frac{3 \, \arctan \left (\frac{\sqrt{a \tan \left (x\right )^{2} + a}}{\sqrt{-a}}\right )}{\sqrt{-a} a^{2}} + \frac{3 \, a \tan \left (x\right )^{2} + 4 \, a}{{\left (a \tan \left (x\right )^{2} + a\right )}^{\frac{3}{2}} a^{2}}\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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