Integrand size = 32, antiderivative size = 69 \[ \int \frac {\cot (c+d x) (a B+b B \tan (c+d x))}{(a+b \tan (c+d x))^2} \, dx=-\frac {b B x}{a^2+b^2}+\frac {B \log (\sin (c+d x))}{a d}-\frac {b^2 B \log (a \cos (c+d x)+b \sin (c+d x))}{a \left (a^2+b^2\right ) d} \]
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Time = 0.11 (sec) , antiderivative size = 69, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {21, 3652, 3611, 3556} \[ \int \frac {\cot (c+d x) (a B+b B \tan (c+d x))}{(a+b \tan (c+d x))^2} \, dx=-\frac {b^2 B \log (a \cos (c+d x)+b \sin (c+d x))}{a d \left (a^2+b^2\right )}-\frac {b B x}{a^2+b^2}+\frac {B \log (\sin (c+d x))}{a d} \]
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Rule 21
Rule 3556
Rule 3611
Rule 3652
Rubi steps \begin{align*} \text {integral}& = B \int \frac {\cot (c+d x)}{a+b \tan (c+d x)} \, dx \\ & = -\frac {b B x}{a^2+b^2}+\frac {B \int \cot (c+d x) \, dx}{a}-\frac {\left (b^2 B\right ) \int \frac {b-a \tan (c+d x)}{a+b \tan (c+d x)} \, dx}{a \left (a^2+b^2\right )} \\ & = -\frac {b B x}{a^2+b^2}+\frac {B \log (\sin (c+d x))}{a d}-\frac {b^2 B \log (a \cos (c+d x)+b \sin (c+d x))}{a \left (a^2+b^2\right ) d} \\ \end{align*}
Result contains complex when optimal does not.
Time = 0.15 (sec) , antiderivative size = 79, normalized size of antiderivative = 1.14 \[ \int \frac {\cot (c+d x) (a B+b B \tan (c+d x))}{(a+b \tan (c+d x))^2} \, dx=-\frac {B \left (a (a+i b) \log (i-\cot (c+d x))+a (a-i b) \log (i+\cot (c+d x))+2 b^2 \log (b+a \cot (c+d x))\right )}{2 a \left (a^2+b^2\right ) d} \]
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Time = 0.24 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.16
method | result | size |
parallelrisch | \(\frac {B \left (-2 a b d x +2 \ln \left (\tan \left (d x +c \right )\right ) a^{2}+2 \ln \left (\tan \left (d x +c \right )\right ) b^{2}-\ln \left (\sec ^{2}\left (d x +c \right )\right ) a^{2}-2 b^{2} \ln \left (a +b \tan \left (d x +c \right )\right )\right )}{2 a d \left (a^{2}+b^{2}\right )}\) | \(80\) |
derivativedivides | \(\frac {B \left (\frac {\ln \left (\tan \left (d x +c \right )\right )}{a}+\frac {-\frac {a \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{2}-b \arctan \left (\tan \left (d x +c \right )\right )}{a^{2}+b^{2}}-\frac {b^{2} \ln \left (a +b \tan \left (d x +c \right )\right )}{a \left (a^{2}+b^{2}\right )}\right )}{d}\) | \(81\) |
default | \(\frac {B \left (\frac {\ln \left (\tan \left (d x +c \right )\right )}{a}+\frac {-\frac {a \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{2}-b \arctan \left (\tan \left (d x +c \right )\right )}{a^{2}+b^{2}}-\frac {b^{2} \ln \left (a +b \tan \left (d x +c \right )\right )}{a \left (a^{2}+b^{2}\right )}\right )}{d}\) | \(81\) |
norman | \(\frac {-\frac {b B a x}{a^{2}+b^{2}}-\frac {b^{2} B x \tan \left (d x +c \right )}{a^{2}+b^{2}}}{a +b \tan \left (d x +c \right )}+\frac {B \ln \left (\tan \left (d x +c \right )\right )}{a d}-\frac {B a \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{2 d \left (a^{2}+b^{2}\right )}-\frac {B \,b^{2} \ln \left (a +b \tan \left (d x +c \right )\right )}{a d \left (a^{2}+b^{2}\right )}\) | \(127\) |
risch | \(-\frac {i x B}{i b -a}-\frac {2 i x B}{a}-\frac {2 i B c}{a d}+\frac {2 i b^{2} B x}{a \left (a^{2}+b^{2}\right )}+\frac {2 i b^{2} B c}{a d \left (a^{2}+b^{2}\right )}+\frac {\ln \left ({\mathrm e}^{2 i \left (d x +c \right )}-1\right ) B}{a d}-\frac {b^{2} \ln \left ({\mathrm e}^{2 i \left (d x +c \right )}-\frac {i b +a}{i b -a}\right ) B}{a d \left (a^{2}+b^{2}\right )}\) | \(149\) |
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Time = 0.26 (sec) , antiderivative size = 104, normalized size of antiderivative = 1.51 \[ \int \frac {\cot (c+d x) (a B+b B \tan (c+d x))}{(a+b \tan (c+d x))^2} \, dx=-\frac {2 \, B a b d x + B b^{2} \log \left (\frac {b^{2} \tan \left (d x + c\right )^{2} + 2 \, a b \tan \left (d x + c\right ) + a^{2}}{\tan \left (d x + c\right )^{2} + 1}\right ) - {\left (B a^{2} + B b^{2}\right )} \log \left (\frac {\tan \left (d x + c\right )^{2}}{\tan \left (d x + c\right )^{2} + 1}\right )}{2 \, {\left (a^{3} + a b^{2}\right )} d} \]
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Result contains complex when optimal does not.
Time = 1.43 (sec) , antiderivative size = 672, normalized size of antiderivative = 9.74 \[ \int \frac {\cot (c+d x) (a B+b B \tan (c+d x))}{(a+b \tan (c+d x))^2} \, dx=\begin {cases} \frac {\tilde {\infty } B x \cot {\left (c \right )}}{\tan {\left (c \right )}} & \text {for}\: a = 0 \wedge b = 0 \wedge d = 0 \\\frac {B \left (- \frac {\log {\left (\tan ^{2}{\left (c + d x \right )} + 1 \right )}}{2 d} + \frac {\log {\left (\tan {\left (c + d x \right )} \right )}}{d}\right )}{a} & \text {for}\: b = 0 \\\frac {B \left (- x - \frac {1}{d \tan {\left (c + d x \right )}}\right )}{b} & \text {for}\: a = 0 \\\frac {B d x \tan {\left (c + d x \right )}}{2 b d \tan {\left (c + d x \right )} - 2 i b d} - \frac {i B d x}{2 b d \tan {\left (c + d x \right )} - 2 i b d} - \frac {i B \log {\left (\tan ^{2}{\left (c + d x \right )} + 1 \right )} \tan {\left (c + d x \right )}}{2 b d \tan {\left (c + d x \right )} - 2 i b d} - \frac {B \log {\left (\tan ^{2}{\left (c + d x \right )} + 1 \right )}}{2 b d \tan {\left (c + d x \right )} - 2 i b d} + \frac {2 i B \log {\left (\tan {\left (c + d x \right )} \right )} \tan {\left (c + d x \right )}}{2 b d \tan {\left (c + d x \right )} - 2 i b d} + \frac {2 B \log {\left (\tan {\left (c + d x \right )} \right )}}{2 b d \tan {\left (c + d x \right )} - 2 i b d} + \frac {B}{2 b d \tan {\left (c + d x \right )} - 2 i b d} & \text {for}\: a = - i b \\\frac {B d x \tan {\left (c + d x \right )}}{2 b d \tan {\left (c + d x \right )} + 2 i b d} + \frac {i B d x}{2 b d \tan {\left (c + d x \right )} + 2 i b d} + \frac {i B \log {\left (\tan ^{2}{\left (c + d x \right )} + 1 \right )} \tan {\left (c + d x \right )}}{2 b d \tan {\left (c + d x \right )} + 2 i b d} - \frac {B \log {\left (\tan ^{2}{\left (c + d x \right )} + 1 \right )}}{2 b d \tan {\left (c + d x \right )} + 2 i b d} - \frac {2 i B \log {\left (\tan {\left (c + d x \right )} \right )} \tan {\left (c + d x \right )}}{2 b d \tan {\left (c + d x \right )} + 2 i b d} + \frac {2 B \log {\left (\tan {\left (c + d x \right )} \right )}}{2 b d \tan {\left (c + d x \right )} + 2 i b d} + \frac {B}{2 b d \tan {\left (c + d x \right )} + 2 i b d} & \text {for}\: a = i b \\\frac {x \left (B a + B b \tan {\left (c \right )}\right ) \cot {\left (c \right )}}{\left (a + b \tan {\left (c \right )}\right )^{2}} & \text {for}\: d = 0 \\- \frac {B a^{2} \log {\left (\tan ^{2}{\left (c + d x \right )} + 1 \right )}}{2 a^{3} d + 2 a b^{2} d} + \frac {2 B a^{2} \log {\left (\tan {\left (c + d x \right )} \right )}}{2 a^{3} d + 2 a b^{2} d} - \frac {2 B a b d x}{2 a^{3} d + 2 a b^{2} d} - \frac {2 B b^{2} \log {\left (\frac {a}{b} + \tan {\left (c + d x \right )} \right )}}{2 a^{3} d + 2 a b^{2} d} + \frac {2 B b^{2} \log {\left (\tan {\left (c + d x \right )} \right )}}{2 a^{3} d + 2 a b^{2} d} & \text {otherwise} \end {cases} \]
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Time = 0.29 (sec) , antiderivative size = 88, normalized size of antiderivative = 1.28 \[ \int \frac {\cot (c+d x) (a B+b B \tan (c+d x))}{(a+b \tan (c+d x))^2} \, dx=-\frac {\frac {2 \, B b^{2} \log \left (b \tan \left (d x + c\right ) + a\right )}{a^{3} + a b^{2}} + \frac {2 \, {\left (d x + c\right )} B b}{a^{2} + b^{2}} + \frac {B a \log \left (\tan \left (d x + c\right )^{2} + 1\right )}{a^{2} + b^{2}} - \frac {2 \, B \log \left (\tan \left (d x + c\right )\right )}{a}}{2 \, d} \]
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Time = 0.46 (sec) , antiderivative size = 92, normalized size of antiderivative = 1.33 \[ \int \frac {\cot (c+d x) (a B+b B \tan (c+d x))}{(a+b \tan (c+d x))^2} \, dx=-\frac {\frac {2 \, B b^{3} \log \left ({\left | b \tan \left (d x + c\right ) + a \right |}\right )}{a^{3} b + a b^{3}} + \frac {2 \, {\left (d x + c\right )} B b}{a^{2} + b^{2}} + \frac {B a \log \left (\tan \left (d x + c\right )^{2} + 1\right )}{a^{2} + b^{2}} - \frac {2 \, B \log \left ({\left | \tan \left (d x + c\right ) \right |}\right )}{a}}{2 \, d} \]
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Time = 7.40 (sec) , antiderivative size = 99, normalized size of antiderivative = 1.43 \[ \int \frac {\cot (c+d x) (a B+b B \tan (c+d x))}{(a+b \tan (c+d x))^2} \, dx=\frac {B\,\ln \left (\mathrm {tan}\left (c+d\,x\right )\right )}{a\,d}-\frac {B\,\ln \left (\mathrm {tan}\left (c+d\,x\right )+1{}\mathrm {i}\right )}{2\,d\,\left (a-b\,1{}\mathrm {i}\right )}-\frac {B\,b^2\,\ln \left (a+b\,\mathrm {tan}\left (c+d\,x\right )\right )}{a\,d\,\left (a^2+b^2\right )}-\frac {B\,\ln \left (\mathrm {tan}\left (c+d\,x\right )-\mathrm {i}\right )\,1{}\mathrm {i}}{2\,d\,\left (-b+a\,1{}\mathrm {i}\right )} \]
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