Integrand size = 13, antiderivative size = 33 \[ \int \frac {\tan ^4(x)}{a+a \cos (x)} \, dx=\frac {\text {arctanh}(\sin (x))}{2 a}-\frac {\sec (x) \tan (x)}{2 a}+\frac {\tan ^3(x)}{3 a} \]
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Time = 0.09 (sec) , antiderivative size = 33, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.385, Rules used = {2785, 2687, 30, 2691, 3855} \[ \int \frac {\tan ^4(x)}{a+a \cos (x)} \, dx=\frac {\text {arctanh}(\sin (x))}{2 a}+\frac {\tan ^3(x)}{3 a}-\frac {\tan (x) \sec (x)}{2 a} \]
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Rule 30
Rule 2687
Rule 2691
Rule 2785
Rule 3855
Rubi steps \begin{align*} \text {integral}& = -\frac {\int \sec (x) \tan ^2(x) \, dx}{a}+\frac {\int \sec ^2(x) \tan ^2(x) \, dx}{a} \\ & = -\frac {\sec (x) \tan (x)}{2 a}+\frac {\int \sec (x) \, dx}{2 a}+\frac {\text {Subst}\left (\int x^2 \, dx,x,\tan (x)\right )}{a} \\ & = \frac {\text {arctanh}(\sin (x))}{2 a}-\frac {\sec (x) \tan (x)}{2 a}+\frac {\tan ^3(x)}{3 a} \\ \end{align*}
Leaf count is larger than twice the leaf count of optimal. \(105\) vs. \(2(33)=66\).
Time = 0.20 (sec) , antiderivative size = 105, normalized size of antiderivative = 3.18 \[ \int \frac {\tan ^4(x)}{a+a \cos (x)} \, dx=-\frac {\sec ^3(x) \left (9 \cos (x) \left (\log \left (\cos \left (\frac {x}{2}\right )-\sin \left (\frac {x}{2}\right )\right )-\log \left (\cos \left (\frac {x}{2}\right )+\sin \left (\frac {x}{2}\right )\right )\right )+3 \cos (3 x) \left (\log \left (\cos \left (\frac {x}{2}\right )-\sin \left (\frac {x}{2}\right )\right )-\log \left (\cos \left (\frac {x}{2}\right )+\sin \left (\frac {x}{2}\right )\right )\right )+2 (-3 \sin (x)+3 \sin (2 x)+\sin (3 x))\right )}{24 a} \]
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Result contains complex when optimal does not.
Time = 0.64 (sec) , antiderivative size = 68, normalized size of antiderivative = 2.06
method | result | size |
risch | \(\frac {i \left (3 \,{\mathrm e}^{5 i x}-6 \,{\mathrm e}^{4 i x}-3 \,{\mathrm e}^{i x}-2\right )}{3 \left ({\mathrm e}^{2 i x}+1\right )^{3} a}+\frac {\ln \left ({\mathrm e}^{i x}+i\right )}{2 a}-\frac {\ln \left ({\mathrm e}^{i x}-i\right )}{2 a}\) | \(68\) |
default | \(\frac {-\frac {1}{3 \left (\tan \left (\frac {x}{2}\right )-1\right )^{3}}-\frac {1}{\left (\tan \left (\frac {x}{2}\right )-1\right )^{2}}-\frac {1}{2 \left (\tan \left (\frac {x}{2}\right )-1\right )}-\frac {\ln \left (\tan \left (\frac {x}{2}\right )-1\right )}{2}-\frac {1}{3 \left (\tan \left (\frac {x}{2}\right )+1\right )^{3}}+\frac {1}{\left (\tan \left (\frac {x}{2}\right )+1\right )^{2}}-\frac {1}{2 \left (\tan \left (\frac {x}{2}\right )+1\right )}+\frac {\ln \left (\tan \left (\frac {x}{2}\right )+1\right )}{2}}{a}\) | \(85\) |
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none
Time = 0.29 (sec) , antiderivative size = 50, normalized size of antiderivative = 1.52 \[ \int \frac {\tan ^4(x)}{a+a \cos (x)} \, dx=\frac {3 \, \cos \left (x\right )^{3} \log \left (\sin \left (x\right ) + 1\right ) - 3 \, \cos \left (x\right )^{3} \log \left (-\sin \left (x\right ) + 1\right ) - 2 \, {\left (2 \, \cos \left (x\right )^{2} + 3 \, \cos \left (x\right ) - 2\right )} \sin \left (x\right )}{12 \, a \cos \left (x\right )^{3}} \]
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\[ \int \frac {\tan ^4(x)}{a+a \cos (x)} \, dx=\frac {\int \frac {\tan ^{4}{\left (x \right )}}{\cos {\left (x \right )} + 1}\, dx}{a} \]
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Leaf count of result is larger than twice the leaf count of optimal. 115 vs. \(2 (27) = 54\).
Time = 0.21 (sec) , antiderivative size = 115, normalized size of antiderivative = 3.48 \[ \int \frac {\tan ^4(x)}{a+a \cos (x)} \, dx=-\frac {\frac {3 \, \sin \left (x\right )}{\cos \left (x\right ) + 1} - \frac {8 \, \sin \left (x\right )^{3}}{{\left (\cos \left (x\right ) + 1\right )}^{3}} - \frac {3 \, \sin \left (x\right )^{5}}{{\left (\cos \left (x\right ) + 1\right )}^{5}}}{3 \, {\left (a - \frac {3 \, a \sin \left (x\right )^{2}}{{\left (\cos \left (x\right ) + 1\right )}^{2}} + \frac {3 \, a \sin \left (x\right )^{4}}{{\left (\cos \left (x\right ) + 1\right )}^{4}} - \frac {a \sin \left (x\right )^{6}}{{\left (\cos \left (x\right ) + 1\right )}^{6}}\right )}} + \frac {\log \left (\frac {\sin \left (x\right )}{\cos \left (x\right ) + 1} + 1\right )}{2 \, a} - \frac {\log \left (\frac {\sin \left (x\right )}{\cos \left (x\right ) + 1} - 1\right )}{2 \, a} \]
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Leaf count of result is larger than twice the leaf count of optimal. 65 vs. \(2 (27) = 54\).
Time = 0.32 (sec) , antiderivative size = 65, normalized size of antiderivative = 1.97 \[ \int \frac {\tan ^4(x)}{a+a \cos (x)} \, dx=\frac {\log \left ({\left | \tan \left (\frac {1}{2} \, x\right ) + 1 \right |}\right )}{2 \, a} - \frac {\log \left ({\left | \tan \left (\frac {1}{2} \, x\right ) - 1 \right |}\right )}{2 \, a} - \frac {3 \, \tan \left (\frac {1}{2} \, x\right )^{5} + 8 \, \tan \left (\frac {1}{2} \, x\right )^{3} - 3 \, \tan \left (\frac {1}{2} \, x\right )}{3 \, {\left (\tan \left (\frac {1}{2} \, x\right )^{2} - 1\right )}^{3} a} \]
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Time = 13.92 (sec) , antiderivative size = 46, normalized size of antiderivative = 1.39 \[ \int \frac {\tan ^4(x)}{a+a \cos (x)} \, dx=\frac {\mathrm {atanh}\left (\mathrm {tan}\left (\frac {x}{2}\right )\right )}{a}-\frac {{\mathrm {tan}\left (\frac {x}{2}\right )}^5+\frac {8\,{\mathrm {tan}\left (\frac {x}{2}\right )}^3}{3}-\mathrm {tan}\left (\frac {x}{2}\right )}{a\,{\left ({\mathrm {tan}\left (\frac {x}{2}\right )}^2-1\right )}^3} \]
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