Integrand size = 14, antiderivative size = 22 \[ \int \frac {\cos (x)}{\left (a-a \sin ^2(x)\right )^2} \, dx=\frac {\text {arctanh}(\sin (x))}{2 a^2}+\frac {\sec (x) \tan (x)}{2 a^2} \]
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Time = 0.04 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.214, Rules used = {3254, 3853, 3855} \[ \int \frac {\cos (x)}{\left (a-a \sin ^2(x)\right )^2} \, dx=\frac {\text {arctanh}(\sin (x))}{2 a^2}+\frac {\tan (x) \sec (x)}{2 a^2} \]
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Rule 3254
Rule 3853
Rule 3855
Rubi steps \begin{align*} \text {integral}& = \frac {\int \sec ^3(x) \, dx}{a^2} \\ & = \frac {\sec (x) \tan (x)}{2 a^2}+\frac {\int \sec (x) \, dx}{2 a^2} \\ & = \frac {\text {arctanh}(\sin (x))}{2 a^2}+\frac {\sec (x) \tan (x)}{2 a^2} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.91 \[ \int \frac {\cos (x)}{\left (a-a \sin ^2(x)\right )^2} \, dx=\frac {\frac {1}{2} \text {arctanh}(\sin (x))+\frac {1}{2} \sec (x) \tan (x)}{a^2} \]
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Time = 0.43 (sec) , antiderivative size = 32, normalized size of antiderivative = 1.45
method | result | size |
parallelrisch | \(\frac {\sec \left (x \right ) \tan \left (x \right )-\ln \left (-\cot \left (x \right )+\csc \left (x \right )-1\right )+\ln \left (-\cot \left (x \right )+\csc \left (x \right )+1\right )}{2 a^{2}}\) | \(32\) |
derivativedivides | \(\frac {-\frac {1}{4 \left (1+\sin \left (x \right )\right )}+\frac {\ln \left (1+\sin \left (x \right )\right )}{4}-\frac {1}{4 \left (\sin \left (x \right )-1\right )}-\frac {\ln \left (\sin \left (x \right )-1\right )}{4}}{a^{2}}\) | \(36\) |
default | \(\frac {-\frac {1}{4 \left (1+\sin \left (x \right )\right )}+\frac {\ln \left (1+\sin \left (x \right )\right )}{4}-\frac {1}{4 \left (\sin \left (x \right )-1\right )}-\frac {\ln \left (\sin \left (x \right )-1\right )}{4}}{a^{2}}\) | \(36\) |
risch | \(-\frac {i \left ({\mathrm e}^{3 i x}-{\mathrm e}^{i x}\right )}{\left ({\mathrm e}^{2 i x}+1\right )^{2} a^{2}}-\frac {\ln \left ({\mathrm e}^{i x}-i\right )}{2 a^{2}}+\frac {\ln \left ({\mathrm e}^{i x}+i\right )}{2 a^{2}}\) | \(58\) |
norman | \(\frac {\frac {\tan ^{5}\left (\frac {x}{2}\right )}{a}+\frac {\tan ^{7}\left (\frac {x}{2}\right )}{a}-\frac {\tan \left (\frac {x}{2}\right )}{a}-\frac {\tan ^{3}\left (\frac {x}{2}\right )}{a}}{\left (1+\tan ^{2}\left (\frac {x}{2}\right )\right ) a \left (\tan ^{2}\left (\frac {x}{2}\right )-1\right )^{3}}-\frac {\ln \left (\tan \left (\frac {x}{2}\right )-1\right )}{2 a^{2}}+\frac {\ln \left (\tan \left (\frac {x}{2}\right )+1\right )}{2 a^{2}}\) | \(91\) |
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Leaf count of result is larger than twice the leaf count of optimal. 37 vs. \(2 (18) = 36\).
Time = 0.28 (sec) , antiderivative size = 37, normalized size of antiderivative = 1.68 \[ \int \frac {\cos (x)}{\left (a-a \sin ^2(x)\right )^2} \, dx=\frac {\cos \left (x\right )^{2} \log \left (\sin \left (x\right ) + 1\right ) - \cos \left (x\right )^{2} \log \left (-\sin \left (x\right ) + 1\right ) + 2 \, \sin \left (x\right )}{4 \, a^{2} \cos \left (x\right )^{2}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 117 vs. \(2 (20) = 40\).
Time = 0.33 (sec) , antiderivative size = 117, normalized size of antiderivative = 5.32 \[ \int \frac {\cos (x)}{\left (a-a \sin ^2(x)\right )^2} \, dx=- \frac {\log {\left (\sin {\left (x \right )} - 1 \right )} \sin ^{2}{\left (x \right )}}{4 a^{2} \sin ^{2}{\left (x \right )} - 4 a^{2}} + \frac {\log {\left (\sin {\left (x \right )} - 1 \right )}}{4 a^{2} \sin ^{2}{\left (x \right )} - 4 a^{2}} + \frac {\log {\left (\sin {\left (x \right )} + 1 \right )} \sin ^{2}{\left (x \right )}}{4 a^{2} \sin ^{2}{\left (x \right )} - 4 a^{2}} - \frac {\log {\left (\sin {\left (x \right )} + 1 \right )}}{4 a^{2} \sin ^{2}{\left (x \right )} - 4 a^{2}} - \frac {2 \sin {\left (x \right )}}{4 a^{2} \sin ^{2}{\left (x \right )} - 4 a^{2}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 41 vs. \(2 (18) = 36\).
Time = 0.23 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.86 \[ \int \frac {\cos (x)}{\left (a-a \sin ^2(x)\right )^2} \, dx=-\frac {\sin \left (x\right )}{2 \, {\left (a^{2} \sin \left (x\right )^{2} - a^{2}\right )}} + \frac {\log \left (\sin \left (x\right ) + 1\right )}{4 \, a^{2}} - \frac {\log \left (\sin \left (x\right ) - 1\right )}{4 \, a^{2}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 38 vs. \(2 (18) = 36\).
Time = 0.32 (sec) , antiderivative size = 38, normalized size of antiderivative = 1.73 \[ \int \frac {\cos (x)}{\left (a-a \sin ^2(x)\right )^2} \, dx=\frac {\log \left (\sin \left (x\right ) + 1\right )}{4 \, a^{2}} - \frac {\log \left (-\sin \left (x\right ) + 1\right )}{4 \, a^{2}} - \frac {\sin \left (x\right )}{2 \, {\left (\sin \left (x\right )^{2} - 1\right )} a^{2}} \]
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Time = 0.08 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.36 \[ \int \frac {\cos (x)}{\left (a-a \sin ^2(x)\right )^2} \, dx=\frac {\mathrm {atanh}\left (\sin \left (x\right )\right )}{2\,a^2}-\frac {\sin \left (x\right )}{2\,\left (a^2\,{\sin \left (x\right )}^2-a^2\right )} \]
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