Integrand size = 21, antiderivative size = 41 \[ \int \cot ^2(c+d x) (a+b \tan (c+d x))^2 \, dx=-\left (\left (a^2-b^2\right ) x\right )-\frac {a^2 \cot (c+d x)}{d}+\frac {2 a b \log (\sin (c+d x))}{d} \]
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Time = 0.08 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {3623, 3612, 3556} \[ \int \cot ^2(c+d x) (a+b \tan (c+d x))^2 \, dx=-x \left (a^2-b^2\right )-\frac {a^2 \cot (c+d x)}{d}+\frac {2 a b \log (\sin (c+d x))}{d} \]
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Rule 3556
Rule 3612
Rule 3623
Rubi steps \begin{align*} \text {integral}& = -\frac {a^2 \cot (c+d x)}{d}+\int \cot (c+d x) \left (2 a b-\left (a^2-b^2\right ) \tan (c+d x)\right ) \, dx \\ & = -\left (\left (a^2-b^2\right ) x\right )-\frac {a^2 \cot (c+d x)}{d}+(2 a b) \int \cot (c+d x) \, dx \\ & = -\left (\left (a^2-b^2\right ) x\right )-\frac {a^2 \cot (c+d x)}{d}+\frac {2 a b \log (\sin (c+d x))}{d} \\ \end{align*}
Result contains complex when optimal does not.
Time = 0.17 (sec) , antiderivative size = 82, normalized size of antiderivative = 2.00 \[ \int \cot ^2(c+d x) (a+b \tan (c+d x))^2 \, dx=\frac {-2 a^2 \cot (c+d x)+i \left ((a+i b)^2 \log (i-\tan (c+d x))-4 i a b \log (\tan (c+d x))-(a-i b)^2 \log (i+\tan (c+d x))\right )}{2 d} \]
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Time = 0.52 (sec) , antiderivative size = 46, normalized size of antiderivative = 1.12
method | result | size |
derivativedivides | \(\frac {a^{2} \left (-\cot \left (d x +c \right )-d x -c \right )+2 a b \ln \left (\sin \left (d x +c \right )\right )+b^{2} \left (d x +c \right )}{d}\) | \(46\) |
default | \(\frac {a^{2} \left (-\cot \left (d x +c \right )-d x -c \right )+2 a b \ln \left (\sin \left (d x +c \right )\right )+b^{2} \left (d x +c \right )}{d}\) | \(46\) |
parallelrisch | \(\frac {-a b \ln \left (\sec ^{2}\left (d x +c \right )\right )+2 a b \ln \left (\tan \left (d x +c \right )\right )-\cot \left (d x +c \right ) a^{2}-d x \left (a -b \right ) \left (a +b \right )}{d}\) | \(53\) |
norman | \(\frac {\left (-a^{2}+b^{2}\right ) x \tan \left (d x +c \right )-\frac {a^{2}}{d}}{\tan \left (d x +c \right )}+\frac {2 a b \ln \left (\tan \left (d x +c \right )\right )}{d}-\frac {a b \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{d}\) | \(69\) |
risch | \(-2 i a b x -a^{2} x +b^{2} x -\frac {4 i a b c}{d}-\frac {2 i a^{2}}{d \left ({\mathrm e}^{2 i \left (d x +c \right )}-1\right )}+\frac {2 a b \ln \left ({\mathrm e}^{2 i \left (d x +c \right )}-1\right )}{d}\) | \(69\) |
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Time = 0.25 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.63 \[ \int \cot ^2(c+d x) (a+b \tan (c+d x))^2 \, dx=-\frac {{\left (a^{2} - b^{2}\right )} d x \tan \left (d x + c\right ) - a b \log \left (\frac {\tan \left (d x + c\right )^{2}}{\tan \left (d x + c\right )^{2} + 1}\right ) \tan \left (d x + c\right ) + a^{2}}{d \tan \left (d x + c\right )} \]
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Leaf count of result is larger than twice the leaf count of optimal. 83 vs. \(2 (34) = 68\).
Time = 0.30 (sec) , antiderivative size = 83, normalized size of antiderivative = 2.02 \[ \int \cot ^2(c+d x) (a+b \tan (c+d x))^2 \, dx=\begin {cases} \tilde {\infty } a^{2} x & \text {for}\: c = 0 \wedge d = 0 \\x \left (a + b \tan {\left (c \right )}\right )^{2} \cot ^{2}{\left (c \right )} & \text {for}\: d = 0 \\\tilde {\infty } a^{2} x & \text {for}\: c = - d x \\- a^{2} x - \frac {a^{2}}{d \tan {\left (c + d x \right )}} - \frac {a b \log {\left (\tan ^{2}{\left (c + d x \right )} + 1 \right )}}{d} + \frac {2 a b \log {\left (\tan {\left (c + d x \right )} \right )}}{d} + b^{2} x & \text {otherwise} \end {cases} \]
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Time = 0.32 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.41 \[ \int \cot ^2(c+d x) (a+b \tan (c+d x))^2 \, dx=-\frac {a b \log \left (\tan \left (d x + c\right )^{2} + 1\right ) - 2 \, a b \log \left (\tan \left (d x + c\right )\right ) + {\left (a^{2} - b^{2}\right )} {\left (d x + c\right )} + \frac {a^{2}}{\tan \left (d x + c\right )}}{d} \]
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Leaf count of result is larger than twice the leaf count of optimal. 98 vs. \(2 (41) = 82\).
Time = 0.62 (sec) , antiderivative size = 98, normalized size of antiderivative = 2.39 \[ \int \cot ^2(c+d x) (a+b \tan (c+d x))^2 \, dx=-\frac {4 \, a b \log \left (\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{2} + 1\right ) - 4 \, a b \log \left ({\left | \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) \right |}\right ) - a^{2} \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) + 2 \, {\left (a^{2} - b^{2}\right )} {\left (d x + c\right )} + \frac {4 \, a b \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) + a^{2}}{\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )}}{2 \, d} \]
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Time = 4.95 (sec) , antiderivative size = 79, normalized size of antiderivative = 1.93 \[ \int \cot ^2(c+d x) (a+b \tan (c+d x))^2 \, dx=\frac {2\,a\,b\,\ln \left (\mathrm {tan}\left (c+d\,x\right )\right )}{d}-\frac {a^2\,\mathrm {cot}\left (c+d\,x\right )}{d}-\frac {\ln \left (\mathrm {tan}\left (c+d\,x\right )+1{}\mathrm {i}\right )\,{\left (a-b\,1{}\mathrm {i}\right )}^2\,1{}\mathrm {i}}{2\,d}-\frac {\ln \left (\mathrm {tan}\left (c+d\,x\right )-\mathrm {i}\right )\,{\left (-b+a\,1{}\mathrm {i}\right )}^2\,1{}\mathrm {i}}{2\,d} \]
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