Integrand size = 16, antiderivative size = 20 \[ \int \frac {\cos ^4(x)}{a-a \sin ^2(x)} \, dx=\frac {x}{2 a}+\frac {\cos (x) \sin (x)}{2 a} \]
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Time = 0.05 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.188, Rules used = {3254, 2715, 8} \[ \int \frac {\cos ^4(x)}{a-a \sin ^2(x)} \, dx=\frac {x}{2 a}+\frac {\sin (x) \cos (x)}{2 a} \]
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Rule 8
Rule 2715
Rule 3254
Rubi steps \begin{align*} \text {integral}& = \frac {\int \cos ^2(x) \, dx}{a} \\ & = \frac {\cos (x) \sin (x)}{2 a}+\frac {\int 1 \, dx}{2 a} \\ & = \frac {x}{2 a}+\frac {\cos (x) \sin (x)}{2 a} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {\cos ^4(x)}{a-a \sin ^2(x)} \, dx=\frac {\frac {x}{2}+\frac {1}{4} \sin (2 x)}{a} \]
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Time = 0.24 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.70
method | result | size |
parallelrisch | \(\frac {2 x +\sin \left (2 x \right )}{4 a}\) | \(14\) |
risch | \(\frac {x}{2 a}+\frac {\sin \left (2 x \right )}{4 a}\) | \(17\) |
default | \(\frac {\frac {\tan \left (x \right )}{2+2 \left (\tan ^{2}\left (x \right )\right )}+\frac {\arctan \left (\tan \left (x \right )\right )}{2}}{a}\) | \(23\) |
norman | \(\frac {\frac {x \left (\tan ^{6}\left (\frac {x}{2}\right )\right )}{a}-\frac {\tan \left (\frac {x}{2}\right )}{a}+\frac {2 \left (\tan ^{5}\left (\frac {x}{2}\right )\right )}{a}-\frac {\tan ^{9}\left (\frac {x}{2}\right )}{a}-\frac {x}{2 a}-\frac {3 x \left (\tan ^{2}\left (\frac {x}{2}\right )\right )}{2 a}-\frac {x \left (\tan ^{4}\left (\frac {x}{2}\right )\right )}{a}+\frac {3 x \left (\tan ^{8}\left (\frac {x}{2}\right )\right )}{2 a}+\frac {x \left (\tan ^{10}\left (\frac {x}{2}\right )\right )}{2 a}}{\left (1+\tan ^{2}\left (\frac {x}{2}\right )\right )^{4} \left (\tan ^{2}\left (\frac {x}{2}\right )-1\right )}\) | \(119\) |
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none
Time = 0.26 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.60 \[ \int \frac {\cos ^4(x)}{a-a \sin ^2(x)} \, dx=\frac {\cos \left (x\right ) \sin \left (x\right ) + x}{2 \, a} \]
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Leaf count of result is larger than twice the leaf count of optimal. 153 vs. \(2 (14) = 28\).
Time = 1.45 (sec) , antiderivative size = 153, normalized size of antiderivative = 7.65 \[ \int \frac {\cos ^4(x)}{a-a \sin ^2(x)} \, dx=\frac {x \tan ^{4}{\left (\frac {x}{2} \right )}}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} + \frac {2 x \tan ^{2}{\left (\frac {x}{2} \right )}}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} + \frac {x}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} - \frac {2 \tan ^{3}{\left (\frac {x}{2} \right )}}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} + \frac {2 \tan {\left (\frac {x}{2} \right )}}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} \]
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none
Time = 0.33 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.05 \[ \int \frac {\cos ^4(x)}{a-a \sin ^2(x)} \, dx=\frac {x}{2 \, a} + \frac {\tan \left (x\right )}{2 \, {\left (a \tan \left (x\right )^{2} + a\right )}} \]
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none
Time = 0.30 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.20 \[ \int \frac {\cos ^4(x)}{a-a \sin ^2(x)} \, dx=\frac {\arctan \left (\tan \left (x\right )\right )}{2 \, a} + \frac {\tan \left (x\right )}{2 \, {\left (\tan \left (x\right )^{2} + 1\right )} a} \]
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Time = 13.33 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.65 \[ \int \frac {\cos ^4(x)}{a-a \sin ^2(x)} \, dx=\frac {2\,x+\sin \left (2\,x\right )}{4\,a} \]
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