Integrand size = 7, antiderivative size = 16 \[ \int \frac {1}{(\sec (x)+\tan (x))^3} \, dx=-\log (1+\sin (x))-\frac {2}{1+\sin (x)} \]
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Time = 0.05 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.429, Rules used = {4476, 2746, 45} \[ \int \frac {1}{(\sec (x)+\tan (x))^3} \, dx=-\frac {2}{\sin (x)+1}-\log (\sin (x)+1) \]
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Rule 45
Rule 2746
Rule 4476
Rubi steps \begin{align*} \text {integral}& = \int \frac {\cos ^3(x)}{(1+\sin (x))^3} \, dx \\ & = \text {Subst}\left (\int \frac {1-x}{(1+x)^2} \, dx,x,\sin (x)\right ) \\ & = \text {Subst}\left (\int \left (\frac {1}{-1-x}+\frac {2}{(1+x)^2}\right ) \, dx,x,\sin (x)\right ) \\ & = -\log (1+\sin (x))-\frac {2}{1+\sin (x)} \\ \end{align*}
Leaf count is larger than twice the leaf count of optimal. \(34\) vs. \(2(16)=32\).
Time = 0.02 (sec) , antiderivative size = 34, normalized size of antiderivative = 2.12 \[ \int \frac {1}{(\sec (x)+\tan (x))^3} \, dx=-2 \log \left (\cos \left (\frac {x}{2}\right )+\sin \left (\frac {x}{2}\right )\right )-\frac {2}{\left (\cos \left (\frac {x}{2}\right )+\sin \left (\frac {x}{2}\right )\right )^2} \]
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Time = 1.14 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.06
method | result | size |
default | \(-\ln \left (1+\sin \left (x \right )\right )-\frac {2}{1+\sin \left (x \right )}\) | \(17\) |
risch | \(i x -\frac {4 i {\mathrm e}^{i x}}{\left (i+{\mathrm e}^{i x}\right )^{2}}-2 \ln \left (i+{\mathrm e}^{i x}\right )\) | \(35\) |
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none
Time = 0.25 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.25 \[ \int \frac {1}{(\sec (x)+\tan (x))^3} \, dx=-\frac {{\left (\sin \left (x\right ) + 1\right )} \log \left (\sin \left (x\right ) + 1\right ) + 2}{\sin \left (x\right ) + 1} \]
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Leaf count of result is larger than twice the leaf count of optimal. 301 vs. \(2 (14) = 28\).
Time = 0.46 (sec) , antiderivative size = 301, normalized size of antiderivative = 18.81 \[ \int \frac {1}{(\sec (x)+\tan (x))^3} \, dx=- \frac {2 \log {\left (\tan {\left (x \right )} + \sec {\left (x \right )} \right )} \tan ^{2}{\left (x \right )}}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} - \frac {4 \log {\left (\tan {\left (x \right )} + \sec {\left (x \right )} \right )} \tan {\left (x \right )} \sec {\left (x \right )}}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} - \frac {2 \log {\left (\tan {\left (x \right )} + \sec {\left (x \right )} \right )} \sec ^{2}{\left (x \right )}}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} + \frac {\log {\left (\tan ^{2}{\left (x \right )} + 1 \right )} \tan ^{2}{\left (x \right )}}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} + \frac {2 \log {\left (\tan ^{2}{\left (x \right )} + 1 \right )} \tan {\left (x \right )} \sec {\left (x \right )}}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} + \frac {\log {\left (\tan ^{2}{\left (x \right )} + 1 \right )} \sec ^{2}{\left (x \right )}}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} + \frac {\tan ^{2}{\left (x \right )}}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} - \frac {\sec ^{2}{\left (x \right )}}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} - \frac {1}{2 \tan ^{2}{\left (x \right )} + 4 \tan {\left (x \right )} \sec {\left (x \right )} + 2 \sec ^{2}{\left (x \right )}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 64 vs. \(2 (16) = 32\).
Time = 0.32 (sec) , antiderivative size = 64, normalized size of antiderivative = 4.00 \[ \int \frac {1}{(\sec (x)+\tan (x))^3} \, dx=\frac {4 \, \sin \left (x\right )}{{\left (\frac {2 \, \sin \left (x\right )}{\cos \left (x\right ) + 1} + \frac {\sin \left (x\right )^{2}}{{\left (\cos \left (x\right ) + 1\right )}^{2}} + 1\right )} {\left (\cos \left (x\right ) + 1\right )}} - 2 \, \log \left (\frac {\sin \left (x\right )}{\cos \left (x\right ) + 1} + 1\right ) + \log \left (\frac {\sin \left (x\right )^{2}}{{\left (\cos \left (x\right ) + 1\right )}^{2}} + 1\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. 45 vs. \(2 (16) = 32\).
Time = 0.28 (sec) , antiderivative size = 45, normalized size of antiderivative = 2.81 \[ \int \frac {1}{(\sec (x)+\tan (x))^3} \, dx=\frac {3 \, \tan \left (\frac {1}{2} \, x\right )^{2} + 10 \, \tan \left (\frac {1}{2} \, x\right ) + 3}{{\left (\tan \left (\frac {1}{2} \, x\right ) + 1\right )}^{2}} + \log \left (\tan \left (\frac {1}{2} \, x\right )^{2} + 1\right ) - 2 \, \log \left ({\left | \tan \left (\frac {1}{2} \, x\right ) + 1 \right |}\right ) \]
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Time = 30.53 (sec) , antiderivative size = 41, normalized size of antiderivative = 2.56 \[ \int \frac {1}{(\sec (x)+\tan (x))^3} \, dx=\ln \left ({\mathrm {tan}\left (\frac {x}{2}\right )}^2+1\right )-2\,\ln \left (\mathrm {tan}\left (\frac {x}{2}\right )+1\right )+\frac {4\,\mathrm {tan}\left (\frac {x}{2}\right )}{{\mathrm {tan}\left (\frac {x}{2}\right )}^2+2\,\mathrm {tan}\left (\frac {x}{2}\right )+1} \]
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