Integrand size = 15, antiderivative size = 63 \[ \int (a+i a \tan (c+d x))^3 \, dx=4 a^3 x-\frac {4 i a^3 \log (\cos (c+d x))}{d}-\frac {2 a^3 \tan (c+d x)}{d}+\frac {i a (a+i a \tan (c+d x))^2}{2 d} \]
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Time = 0.04 (sec) , antiderivative size = 63, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {3559, 3558, 3556} \[ \int (a+i a \tan (c+d x))^3 \, dx=-\frac {2 a^3 \tan (c+d x)}{d}-\frac {4 i a^3 \log (\cos (c+d x))}{d}+4 a^3 x+\frac {i a (a+i a \tan (c+d x))^2}{2 d} \]
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Rule 3556
Rule 3558
Rule 3559
Rubi steps \begin{align*} \text {integral}& = \frac {i a (a+i a \tan (c+d x))^2}{2 d}+(2 a) \int (a+i a \tan (c+d x))^2 \, dx \\ & = 4 a^3 x-\frac {2 a^3 \tan (c+d x)}{d}+\frac {i a (a+i a \tan (c+d x))^2}{2 d}+\left (4 i a^3\right ) \int \tan (c+d x) \, dx \\ & = 4 a^3 x-\frac {4 i a^3 \log (\cos (c+d x))}{d}-\frac {2 a^3 \tan (c+d x)}{d}+\frac {i a (a+i a \tan (c+d x))^2}{2 d} \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 46, normalized size of antiderivative = 0.73 \[ \int (a+i a \tan (c+d x))^3 \, dx=\frac {i a^3 \left (8 \log (i+\tan (c+d x))+6 i \tan (c+d x)-\tan ^2(c+d x)\right )}{2 d} \]
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Time = 0.14 (sec) , antiderivative size = 51, normalized size of antiderivative = 0.81
method | result | size |
derivativedivides | \(\frac {a^{3} \left (-3 \tan \left (d x +c \right )-\frac {i \left (\tan ^{2}\left (d x +c \right )\right )}{2}+2 i \ln \left (1+\tan ^{2}\left (d x +c \right )\right )+4 \arctan \left (\tan \left (d x +c \right )\right )\right )}{d}\) | \(51\) |
default | \(\frac {a^{3} \left (-3 \tan \left (d x +c \right )-\frac {i \left (\tan ^{2}\left (d x +c \right )\right )}{2}+2 i \ln \left (1+\tan ^{2}\left (d x +c \right )\right )+4 \arctan \left (\tan \left (d x +c \right )\right )\right )}{d}\) | \(51\) |
parallelrisch | \(\frac {-i a^{3} \left (\tan ^{2}\left (d x +c \right )\right )+4 i a^{3} \ln \left (1+\tan ^{2}\left (d x +c \right )\right )+8 a^{3} d x -6 a^{3} \tan \left (d x +c \right )}{2 d}\) | \(56\) |
norman | \(4 a^{3} x -\frac {3 a^{3} \tan \left (d x +c \right )}{d}-\frac {i a^{3} \left (\tan ^{2}\left (d x +c \right )\right )}{2 d}+\frac {2 i a^{3} \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{d}\) | \(59\) |
risch | \(-\frac {8 a^{3} c}{d}-\frac {2 i a^{3} \left (4 \,{\mathrm e}^{2 i \left (d x +c \right )}+3\right )}{d \left ({\mathrm e}^{2 i \left (d x +c \right )}+1\right )^{2}}-\frac {4 i a^{3} \ln \left ({\mathrm e}^{2 i \left (d x +c \right )}+1\right )}{d}\) | \(67\) |
parts | \(a^{3} x -\frac {i a^{3} \left (\frac {\left (\tan ^{2}\left (d x +c \right )\right )}{2}-\frac {\ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{2}\right )}{d}+\frac {3 i a^{3} \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{2 d}-\frac {3 a^{3} \left (\tan \left (d x +c \right )-\arctan \left (\tan \left (d x +c \right )\right )\right )}{d}\) | \(84\) |
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Time = 0.23 (sec) , antiderivative size = 97, normalized size of antiderivative = 1.54 \[ \int (a+i a \tan (c+d x))^3 \, dx=-\frac {2 \, {\left (4 i \, a^{3} e^{\left (2 i \, d x + 2 i \, c\right )} + 3 i \, a^{3} + 2 \, {\left (i \, a^{3} e^{\left (4 i \, d x + 4 i \, c\right )} + 2 i \, a^{3} e^{\left (2 i \, d x + 2 i \, c\right )} + i \, a^{3}\right )} \log \left (e^{\left (2 i \, d x + 2 i \, c\right )} + 1\right )\right )}}{d e^{\left (4 i \, d x + 4 i \, c\right )} + 2 \, d e^{\left (2 i \, d x + 2 i \, c\right )} + d} \]
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Time = 0.17 (sec) , antiderivative size = 94, normalized size of antiderivative = 1.49 \[ \int (a+i a \tan (c+d x))^3 \, dx=- \frac {4 i a^{3} \log {\left (e^{2 i d x} + e^{- 2 i c} \right )}}{d} + \frac {- 8 i a^{3} e^{2 i c} e^{2 i d x} - 6 i a^{3}}{d e^{4 i c} e^{4 i d x} + 2 d e^{2 i c} e^{2 i d x} + d} \]
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Time = 0.31 (sec) , antiderivative size = 76, normalized size of antiderivative = 1.21 \[ \int (a+i a \tan (c+d x))^3 \, dx=a^{3} x + \frac {3 \, {\left (d x + c - \tan \left (d x + c\right )\right )} a^{3}}{d} + \frac {i \, a^{3} {\left (\frac {1}{\sin \left (d x + c\right )^{2} - 1} - \log \left (\sin \left (d x + c\right )^{2} - 1\right )\right )}}{2 \, d} + \frac {3 i \, a^{3} \log \left (\sec \left (d x + c\right )\right )}{d} \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 118 vs. \(2 (55) = 110\).
Time = 0.37 (sec) , antiderivative size = 118, normalized size of antiderivative = 1.87 \[ \int (a+i a \tan (c+d x))^3 \, dx=-\frac {2 \, {\left (2 i \, a^{3} e^{\left (4 i \, d x + 4 i \, c\right )} \log \left (e^{\left (2 i \, d x + 2 i \, c\right )} + 1\right ) + 4 i \, a^{3} e^{\left (2 i \, d x + 2 i \, c\right )} \log \left (e^{\left (2 i \, d x + 2 i \, c\right )} + 1\right ) + 4 i \, a^{3} e^{\left (2 i \, d x + 2 i \, c\right )} + 2 i \, a^{3} \log \left (e^{\left (2 i \, d x + 2 i \, c\right )} + 1\right ) + 3 i \, a^{3}\right )}}{d e^{\left (4 i \, d x + 4 i \, c\right )} + 2 \, d e^{\left (2 i \, d x + 2 i \, c\right )} + d} \]
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Time = 5.02 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.65 \[ \int (a+i a \tan (c+d x))^3 \, dx=-\frac {a^3\,\left (6\,\mathrm {tan}\left (c+d\,x\right )-\ln \left (\mathrm {tan}\left (c+d\,x\right )+1{}\mathrm {i}\right )\,8{}\mathrm {i}+{\mathrm {tan}\left (c+d\,x\right )}^2\,1{}\mathrm {i}\right )}{2\,d} \]
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