Integrand size = 17, antiderivative size = 30 \[ \int \frac {\tan ^3(x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx=\frac {1}{3 \left (a \sec ^2(x)\right )^{3/2}}-\frac {1}{a \sqrt {a \sec ^2(x)}} \]
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Time = 0.13 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.176, Rules used = {3738, 4209, 45} \[ \int \frac {\tan ^3(x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx=\frac {1}{3 \left (a \sec ^2(x)\right )^{3/2}}-\frac {1}{a \sqrt {a \sec ^2(x)}} \]
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Rule 45
Rule 3738
Rule 4209
Rubi steps \begin{align*} \text {integral}& = \int \frac {\tan ^3(x)}{\left (a \sec ^2(x)\right )^{3/2}} \, dx \\ & = \frac {1}{2} a \text {Subst}\left (\int \frac {-1+x}{(a x)^{5/2}} \, dx,x,\sec ^2(x)\right ) \\ & = \frac {1}{2} a \text {Subst}\left (\int \left (-\frac {1}{(a x)^{5/2}}+\frac {1}{a (a x)^{3/2}}\right ) \, 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)}} \\ \end{align*}
Time = 0.08 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.77 \[ \int \frac {\tan ^3(x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx=\frac {-3+\cos ^2(x)}{3 a \sqrt {a \sec ^2(x)}} \]
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Time = 0.05 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.97
method | result | size |
derivativedivides | \(-\frac {1}{a \sqrt {a +a \tan \left (x \right )^{2}}}+\frac {1}{3 \left (a +a \tan \left (x \right )^{2}\right )^{\frac {3}{2}}}\) | \(29\) |
default | \(-\frac {1}{a \sqrt {a +a \tan \left (x \right )^{2}}}+\frac {1}{3 \left (a +a \tan \left (x \right )^{2}\right )^{\frac {3}{2}}}\) | \(29\) |
risch | \(\frac {{\mathrm e}^{4 i x}}{24 a \left ({\mathrm e}^{2 i x}+1\right ) \sqrt {\frac {a \,{\mathrm e}^{2 i x}}{\left ({\mathrm e}^{2 i x}+1\right )^{2}}}}-\frac {3 \,{\mathrm e}^{2 i x}}{8 a \left ({\mathrm e}^{2 i x}+1\right ) \sqrt {\frac {a \,{\mathrm e}^{2 i x}}{\left ({\mathrm e}^{2 i x}+1\right )^{2}}}}-\frac {3}{8 \sqrt {\frac {a \,{\mathrm e}^{2 i x}}{\left ({\mathrm e}^{2 i x}+1\right )^{2}}}\, \left ({\mathrm e}^{2 i x}+1\right ) a}+\frac {{\mathrm e}^{-2 i x}}{24 a \left ({\mathrm e}^{2 i x}+1\right ) \sqrt {\frac {a \,{\mathrm e}^{2 i x}}{\left ({\mathrm e}^{2 i x}+1\right )^{2}}}}\) | \(145\) |
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Time = 0.25 (sec) , antiderivative size = 43, normalized size of antiderivative = 1.43 \[ \int \frac {\tan ^3(x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx=-\frac {\sqrt {a \tan \left (x\right )^{2} + a} {\left (3 \, \tan \left (x\right )^{2} + 2\right )}}{3 \, {\left (a^{2} \tan \left (x\right )^{4} + 2 \, a^{2} \tan \left (x\right )^{2} + a^{2}\right )}} \]
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Time = 1.54 (sec) , antiderivative size = 39, normalized size of antiderivative = 1.30 \[ \int \frac {\tan ^3(x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx=\begin {cases} \frac {2 \left (\frac {a^{2}}{6 \left (a \tan ^{2}{\left (x \right )} + a\right )^{\frac {3}{2}}} - \frac {a}{2 \sqrt {a \tan ^{2}{\left (x \right )} + a}}\right )}{a^{2}} & \text {for}\: a \neq 0 \\\tilde {\infty } \tan ^{4}{\left (x \right )} & \text {otherwise} \end {cases} \]
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Time = 0.35 (sec) , antiderivative size = 38, normalized size of antiderivative = 1.27 \[ \int \frac {\tan ^3(x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx=\frac {{\left (\sin \left (x\right )^{2} + 2\right )} {\left (\sin \left (x\right ) + 1\right )}^{\frac {3}{2}} {\left (-\sin \left (x\right ) + 1\right )}^{\frac {3}{2}}}{3 \, {\left (a^{\frac {3}{2}} \sin \left (x\right )^{2} - a^{\frac {3}{2}}\right )}} \]
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Time = 0.26 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.87 \[ \int \frac {\tan ^3(x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx=-\frac {3 \, a \tan \left (x\right )^{2} + 2 \, a}{3 \, {\left (a \tan \left (x\right )^{2} + a\right )}^{\frac {3}{2}} a} \]
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Time = 10.90 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.97 \[ \int \frac {\tan ^3(x)}{\left (a+a \tan ^2(x)\right )^{3/2}} \, dx=-\frac {\left ({\mathrm {tan}\left (x\right )}^2+\frac {2}{3}\right )\,\sqrt {a\,{\mathrm {tan}\left (x\right )}^2+a}}{a^2\,{\left ({\mathrm {tan}\left (x\right )}^2+1\right )}^2} \]
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