Integrand size = 21, antiderivative size = 278 \[ \int \frac {\cot ^2(c+d x)}{(a+b \tan (c+d x))^4} \, dx=-\frac {\left (a^4-6 a^2 b^2+b^4\right ) x}{\left (a^2+b^2\right )^4}-\frac {4 b \log (\sin (c+d x))}{a^5 d}+\frac {4 b^3 \left (5 a^6+6 a^4 b^2+4 a^2 b^4+b^6\right ) \log (a \cos (c+d x)+b \sin (c+d x))}{a^5 \left (a^2+b^2\right )^4 d}-\frac {b \left (3 a^2+4 b^2\right )}{3 a^2 \left (a^2+b^2\right ) d (a+b \tan (c+d x))^3}-\frac {\cot (c+d x)}{a d (a+b \tan (c+d x))^3}-\frac {b \left (a^4+4 a^2 b^2+2 b^4\right )}{a^3 \left (a^2+b^2\right )^2 d (a+b \tan (c+d x))^2}-\frac {b \left (a^6+13 a^4 b^2+12 a^2 b^4+4 b^6\right )}{a^4 \left (a^2+b^2\right )^3 d (a+b \tan (c+d x))} \]
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Time = 1.03 (sec) , antiderivative size = 278, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.238, Rules used = {3650, 3730, 3732, 3611, 3556} \[ \int \frac {\cot ^2(c+d x)}{(a+b \tan (c+d x))^4} \, dx=-\frac {4 b \log (\sin (c+d x))}{a^5 d}-\frac {b \left (3 a^2+4 b^2\right )}{3 a^2 d \left (a^2+b^2\right ) (a+b \tan (c+d x))^3}-\frac {x \left (a^4-6 a^2 b^2+b^4\right )}{\left (a^2+b^2\right )^4}-\frac {b \left (a^6+13 a^4 b^2+12 a^2 b^4+4 b^6\right )}{a^4 d \left (a^2+b^2\right )^3 (a+b \tan (c+d x))}-\frac {b \left (a^4+4 a^2 b^2+2 b^4\right )}{a^3 d \left (a^2+b^2\right )^2 (a+b \tan (c+d x))^2}+\frac {4 b^3 \left (5 a^6+6 a^4 b^2+4 a^2 b^4+b^6\right ) \log (a \cos (c+d x)+b \sin (c+d x))}{a^5 d \left (a^2+b^2\right )^4}-\frac {\cot (c+d x)}{a d (a+b \tan (c+d x))^3} \]
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Rule 3556
Rule 3611
Rule 3650
Rule 3730
Rule 3732
Rubi steps \begin{align*} \text {integral}& = -\frac {\cot (c+d x)}{a d (a+b \tan (c+d x))^3}-\frac {\int \frac {\cot (c+d x) \left (4 b+a \tan (c+d x)+4 b \tan ^2(c+d x)\right )}{(a+b \tan (c+d x))^4} \, dx}{a} \\ & = -\frac {b \left (3 a^2+4 b^2\right )}{3 a^2 \left (a^2+b^2\right ) d (a+b \tan (c+d x))^3}-\frac {\cot (c+d x)}{a d (a+b \tan (c+d x))^3}-\frac {\int \frac {\cot (c+d x) \left (12 b \left (a^2+b^2\right )+3 a^3 \tan (c+d x)+3 b \left (3 a^2+4 b^2\right ) \tan ^2(c+d x)\right )}{(a+b \tan (c+d x))^3} \, dx}{3 a^2 \left (a^2+b^2\right )} \\ & = -\frac {b \left (3 a^2+4 b^2\right )}{3 a^2 \left (a^2+b^2\right ) d (a+b \tan (c+d x))^3}-\frac {\cot (c+d x)}{a d (a+b \tan (c+d x))^3}-\frac {b \left (a^4+4 a^2 b^2+2 b^4\right )}{a^3 \left (a^2+b^2\right )^2 d (a+b \tan (c+d x))^2}-\frac {\int \frac {\cot (c+d x) \left (24 b \left (a^2+b^2\right )^2+6 a^3 \left (a^2-b^2\right ) \tan (c+d x)+12 b \left (a^4+4 a^2 b^2+2 b^4\right ) \tan ^2(c+d x)\right )}{(a+b \tan (c+d x))^2} \, dx}{6 a^3 \left (a^2+b^2\right )^2} \\ & = -\frac {b \left (3 a^2+4 b^2\right )}{3 a^2 \left (a^2+b^2\right ) d (a+b \tan (c+d x))^3}-\frac {\cot (c+d x)}{a d (a+b \tan (c+d x))^3}-\frac {b \left (a^4+4 a^2 b^2+2 b^4\right )}{a^3 \left (a^2+b^2\right )^2 d (a+b \tan (c+d x))^2}-\frac {b \left (a^6+13 a^4 b^2+12 a^2 b^4+4 b^6\right )}{a^4 \left (a^2+b^2\right )^3 d (a+b \tan (c+d x))}-\frac {\int \frac {\cot (c+d x) \left (24 b \left (a^2+b^2\right )^3+6 a^5 \left (a^2-3 b^2\right ) \tan (c+d x)+6 b \left (a^6+13 a^4 b^2+12 a^2 b^4+4 b^6\right ) \tan ^2(c+d x)\right )}{a+b \tan (c+d x)} \, dx}{6 a^4 \left (a^2+b^2\right )^3} \\ & = -\frac {\left (a^4-6 a^2 b^2+b^4\right ) x}{\left (a^2+b^2\right )^4}-\frac {b \left (3 a^2+4 b^2\right )}{3 a^2 \left (a^2+b^2\right ) d (a+b \tan (c+d x))^3}-\frac {\cot (c+d x)}{a d (a+b \tan (c+d x))^3}-\frac {b \left (a^4+4 a^2 b^2+2 b^4\right )}{a^3 \left (a^2+b^2\right )^2 d (a+b \tan (c+d x))^2}-\frac {b \left (a^6+13 a^4 b^2+12 a^2 b^4+4 b^6\right )}{a^4 \left (a^2+b^2\right )^3 d (a+b \tan (c+d x))}-\frac {(4 b) \int \cot (c+d x) \, dx}{a^5}+\frac {\left (4 b^3 \left (5 a^6+6 a^4 b^2+4 a^2 b^4+b^6\right )\right ) \int \frac {b-a \tan (c+d x)}{a+b \tan (c+d x)} \, dx}{a^5 \left (a^2+b^2\right )^4} \\ & = -\frac {\left (a^4-6 a^2 b^2+b^4\right ) x}{\left (a^2+b^2\right )^4}-\frac {4 b \log (\sin (c+d x))}{a^5 d}+\frac {4 b^3 \left (5 a^6+6 a^4 b^2+4 a^2 b^4+b^6\right ) \log (a \cos (c+d x)+b \sin (c+d x))}{a^5 \left (a^2+b^2\right )^4 d}-\frac {b \left (3 a^2+4 b^2\right )}{3 a^2 \left (a^2+b^2\right ) d (a+b \tan (c+d x))^3}-\frac {\cot (c+d x)}{a d (a+b \tan (c+d x))^3}-\frac {b \left (a^4+4 a^2 b^2+2 b^4\right )}{a^3 \left (a^2+b^2\right )^2 d (a+b \tan (c+d x))^2}-\frac {b \left (a^6+13 a^4 b^2+12 a^2 b^4+4 b^6\right )}{a^4 \left (a^2+b^2\right )^3 d (a+b \tan (c+d x))} \\ \end{align*}
Result contains complex when optimal does not.
Time = 3.71 (sec) , antiderivative size = 241, normalized size of antiderivative = 0.87 \[ \int \frac {\cot ^2(c+d x)}{(a+b \tan (c+d x))^4} \, dx=-\frac {\frac {\cot (c+d x)}{a^4}-\frac {b^6}{3 a^5 \left (a^2+b^2\right ) (b+a \cot (c+d x))^3}+\frac {b^5 \left (3 a^2+2 b^2\right )}{a^5 \left (a^2+b^2\right )^2 (b+a \cot (c+d x))^2}-\frac {b^4 \left (15 a^4+17 a^2 b^2+6 b^4\right )}{a^5 \left (a^2+b^2\right )^3 (b+a \cot (c+d x))}+\frac {i \log (i-\cot (c+d x))}{2 (a-i b)^4}-\frac {i \log (i+\cot (c+d x))}{2 (a+i b)^4}-\frac {4 b^3 \left (5 a^6+6 a^4 b^2+4 a^2 b^4+b^6\right ) \log (b+a \cot (c+d x))}{a^5 \left (a^2+b^2\right )^4}}{d} \]
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Time = 1.47 (sec) , antiderivative size = 264, normalized size of antiderivative = 0.95
method | result | size |
derivativedivides | \(\frac {\frac {\frac {\left (4 a^{3} b -4 a \,b^{3}\right ) \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{2}+\left (-a^{4}+6 a^{2} b^{2}-b^{4}\right ) \arctan \left (\tan \left (d x +c \right )\right )}{\left (a^{2}+b^{2}\right )^{4}}-\frac {b^{3}}{3 a^{2} \left (a^{2}+b^{2}\right ) \left (a +b \tan \left (d x +c \right )\right )^{3}}-\frac {b^{3} \left (10 a^{4}+9 a^{2} b^{2}+3 b^{4}\right )}{a^{4} \left (a^{2}+b^{2}\right )^{3} \left (a +b \tan \left (d x +c \right )\right )}-\frac {b^{3} \left (2 a^{2}+b^{2}\right )}{a^{3} \left (a^{2}+b^{2}\right )^{2} \left (a +b \tan \left (d x +c \right )\right )^{2}}+\frac {4 b^{3} \left (5 a^{6}+6 a^{4} b^{2}+4 a^{2} b^{4}+b^{6}\right ) \ln \left (a +b \tan \left (d x +c \right )\right )}{a^{5} \left (a^{2}+b^{2}\right )^{4}}-\frac {1}{a^{4} \tan \left (d x +c \right )}-\frac {4 b \ln \left (\tan \left (d x +c \right )\right )}{a^{5}}}{d}\) | \(264\) |
default | \(\frac {\frac {\frac {\left (4 a^{3} b -4 a \,b^{3}\right ) \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{2}+\left (-a^{4}+6 a^{2} b^{2}-b^{4}\right ) \arctan \left (\tan \left (d x +c \right )\right )}{\left (a^{2}+b^{2}\right )^{4}}-\frac {b^{3}}{3 a^{2} \left (a^{2}+b^{2}\right ) \left (a +b \tan \left (d x +c \right )\right )^{3}}-\frac {b^{3} \left (10 a^{4}+9 a^{2} b^{2}+3 b^{4}\right )}{a^{4} \left (a^{2}+b^{2}\right )^{3} \left (a +b \tan \left (d x +c \right )\right )}-\frac {b^{3} \left (2 a^{2}+b^{2}\right )}{a^{3} \left (a^{2}+b^{2}\right )^{2} \left (a +b \tan \left (d x +c \right )\right )^{2}}+\frac {4 b^{3} \left (5 a^{6}+6 a^{4} b^{2}+4 a^{2} b^{4}+b^{6}\right ) \ln \left (a +b \tan \left (d x +c \right )\right )}{a^{5} \left (a^{2}+b^{2}\right )^{4}}-\frac {1}{a^{4} \tan \left (d x +c \right )}-\frac {4 b \ln \left (\tan \left (d x +c \right )\right )}{a^{5}}}{d}\) | \(264\) |
parallelrisch | \(\frac {20 \left (a +b \tan \left (d x +c \right )\right )^{3} b^{3} \left (a^{6}+\frac {6}{5} a^{4} b^{2}+\frac {4}{5} a^{2} b^{4}+\frac {1}{5} b^{6}\right ) \ln \left (a +b \tan \left (d x +c \right )\right )+2 b \,a^{6} \left (a -b \right ) \left (a +b \right ) \left (a +b \tan \left (d x +c \right )\right )^{3} \ln \left (\sec ^{2}\left (d x +c \right )\right )-4 b \left (a^{2}+b^{2}\right )^{4} \left (a +b \tan \left (d x +c \right )\right )^{3} \ln \left (\tan \left (d x +c \right )\right )-b^{3} \left (a^{9} d x -6 x \,a^{7} b^{2} d +a^{5} b^{4} d x -3 a^{8} b -\frac {73}{3} a^{6} b^{3}-43 a^{4} b^{5}-29 a^{2} b^{7}-\frac {22}{3} b^{9}\right ) \left (\tan ^{3}\left (d x +c \right )\right )-3 a \,b^{2} \left (a^{9} d x -6 x \,a^{7} b^{2} d +a^{5} b^{4} d x -\frac {8}{3} a^{8} b -\frac {59}{3} a^{6} b^{3}-\frac {104}{3} a^{4} b^{5}-\frac {71}{3} a^{2} b^{7}-6 b^{9}\right ) \left (\tan ^{2}\left (d x +c \right )\right )-3 a^{2} \left (a^{9} d x -6 x \,a^{7} b^{2} d +a^{5} b^{4} d x -2 a^{8} b -13 a^{6} b^{3}-\frac {68}{3} a^{4} b^{5}-\frac {47}{3} a^{2} b^{7}-4 b^{9}\right ) b \tan \left (d x +c \right )-a^{4} \left (\left (a^{2}+b^{2}\right )^{4} \cot \left (d x +c \right )+a^{8} d x -6 a^{6} b^{2} d x +a^{4} b^{4} d x \right )}{d \,a^{5} \left (a^{2}+b^{2}\right )^{4} \left (a +b \tan \left (d x +c \right )\right )^{3}}\) | \(418\) |
norman | \(\frac {\frac {b \left (6 a^{6} b +33 a^{4} b^{3}+35 b^{5} a^{2}+12 b^{7}\right ) \left (\tan ^{2}\left (d x +c \right )\right )}{d \,a^{3} \left (a^{6}+3 a^{4} b^{2}+3 a^{2} b^{4}+b^{6}\right )}+\frac {b^{2} \left (8 a^{6} b +51 a^{4} b^{3}+53 b^{5} a^{2}+18 b^{7}\right ) \left (\tan ^{3}\left (d x +c \right )\right )}{d \,a^{4} \left (a^{6}+3 a^{4} b^{2}+3 a^{2} b^{4}+b^{6}\right )}-\frac {1}{a d}-\frac {b^{3} \left (a^{4}-6 a^{2} b^{2}+b^{4}\right ) x \left (\tan ^{4}\left (d x +c \right )\right )}{\left (a^{6}+3 a^{4} b^{2}+3 a^{2} b^{4}+b^{6}\right ) \left (a^{2}+b^{2}\right )}+\frac {b^{3} \left (9 a^{6} b +64 a^{4} b^{3}+65 b^{5} a^{2}+22 b^{7}\right ) \left (\tan ^{4}\left (d x +c \right )\right )}{3 d \,a^{5} \left (a^{6}+3 a^{4} b^{2}+3 a^{2} b^{4}+b^{6}\right )}-\frac {\left (a^{4}-6 a^{2} b^{2}+b^{4}\right ) a^{3} x \tan \left (d x +c \right )}{\left (a^{6}+3 a^{4} b^{2}+3 a^{2} b^{4}+b^{6}\right ) \left (a^{2}+b^{2}\right )}-\frac {3 b \left (a^{4}-6 a^{2} b^{2}+b^{4}\right ) a^{2} x \left (\tan ^{2}\left (d x +c \right )\right )}{\left (a^{6}+3 a^{4} b^{2}+3 a^{2} b^{4}+b^{6}\right ) \left (a^{2}+b^{2}\right )}-\frac {3 b^{2} \left (a^{4}-6 a^{2} b^{2}+b^{4}\right ) a x \left (\tan ^{3}\left (d x +c \right )\right )}{\left (a^{6}+3 a^{4} b^{2}+3 a^{2} b^{4}+b^{6}\right ) \left (a^{2}+b^{2}\right )}}{\tan \left (d x +c \right ) \left (a +b \tan \left (d x +c \right )\right )^{3}}-\frac {4 b \ln \left (\tan \left (d x +c \right )\right )}{a^{5} d}+\frac {2 a b \left (a^{2}-b^{2}\right ) \ln \left (1+\tan ^{2}\left (d x +c \right )\right )}{d \left (a^{8}+4 a^{6} b^{2}+6 a^{4} b^{4}+4 b^{6} a^{2}+b^{8}\right )}+\frac {4 b^{3} \left (5 a^{6}+6 a^{4} b^{2}+4 a^{2} b^{4}+b^{6}\right ) \ln \left (a +b \tan \left (d x +c \right )\right )}{d \,a^{5} \left (a^{8}+4 a^{6} b^{2}+6 a^{4} b^{4}+4 b^{6} a^{2}+b^{8}\right )}\) | \(652\) |
risch | \(\text {Expression too large to display}\) | \(1370\) |
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Leaf count of result is larger than twice the leaf count of optimal. 925 vs. \(2 (276) = 552\).
Time = 0.33 (sec) , antiderivative size = 925, normalized size of antiderivative = 3.33 \[ \int \frac {\cot ^2(c+d x)}{(a+b \tan (c+d x))^4} \, dx=-\frac {3 \, a^{12} + 12 \, a^{10} b^{2} + 18 \, a^{8} b^{4} + 12 \, a^{6} b^{6} + 3 \, a^{4} b^{8} - {\left (37 \, a^{6} b^{6} + 21 \, a^{4} b^{8} + 6 \, a^{2} b^{10} - 3 \, {\left (a^{9} b^{3} - 6 \, a^{7} b^{5} + a^{5} b^{7}\right )} d x\right )} \tan \left (d x + c\right )^{4} + 3 \, {\left (a^{9} b^{3} - 23 \, a^{7} b^{5} + 4 \, a^{5} b^{7} + 10 \, a^{3} b^{9} + 4 \, a b^{11} + 3 \, {\left (a^{10} b^{2} - 6 \, a^{8} b^{4} + a^{6} b^{6}\right )} d x\right )} \tan \left (d x + c\right )^{3} + 3 \, {\left (3 \, a^{10} b^{2} - 3 \, a^{8} b^{4} + 40 \, a^{6} b^{6} + 34 \, a^{4} b^{8} + 10 \, a^{2} b^{10} + 3 \, {\left (a^{11} b - 6 \, a^{9} b^{3} + a^{7} b^{5}\right )} d x\right )} \tan \left (d x + c\right )^{2} + 6 \, {\left ({\left (a^{8} b^{4} + 4 \, a^{6} b^{6} + 6 \, a^{4} b^{8} + 4 \, a^{2} b^{10} + b^{12}\right )} \tan \left (d x + c\right )^{4} + 3 \, {\left (a^{9} b^{3} + 4 \, a^{7} b^{5} + 6 \, a^{5} b^{7} + 4 \, a^{3} b^{9} + a b^{11}\right )} \tan \left (d x + c\right )^{3} + 3 \, {\left (a^{10} b^{2} + 4 \, a^{8} b^{4} + 6 \, a^{6} b^{6} + 4 \, a^{4} b^{8} + a^{2} b^{10}\right )} \tan \left (d x + c\right )^{2} + {\left (a^{11} b + 4 \, a^{9} b^{3} + 6 \, a^{7} b^{5} + 4 \, a^{5} b^{7} + a^{3} b^{9}\right )} \tan \left (d x + c\right )\right )} \log \left (\frac {\tan \left (d x + c\right )^{2}}{\tan \left (d x + c\right )^{2} + 1}\right ) - 6 \, {\left ({\left (5 \, a^{6} b^{6} + 6 \, a^{4} b^{8} + 4 \, a^{2} b^{10} + b^{12}\right )} \tan \left (d x + c\right )^{4} + 3 \, {\left (5 \, a^{7} b^{5} + 6 \, a^{5} b^{7} + 4 \, a^{3} b^{9} + a b^{11}\right )} \tan \left (d x + c\right )^{3} + 3 \, {\left (5 \, a^{8} b^{4} + 6 \, a^{6} b^{6} + 4 \, a^{4} b^{8} + a^{2} b^{10}\right )} \tan \left (d x + c\right )^{2} + {\left (5 \, a^{9} b^{3} + 6 \, a^{7} b^{5} + 4 \, a^{5} b^{7} + a^{3} b^{9}\right )} \tan \left (d x + c\right )\right )} \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 (9 \, a^{11} b + 36 \, a^{9} b^{3} + 108 \, a^{7} b^{5} + 81 \, a^{5} b^{7} + 22 \, a^{3} b^{9} + 3 \, {\left (a^{12} - 6 \, a^{10} b^{2} + a^{8} b^{4}\right )} d x\right )} \tan \left (d x + c\right )}{3 \, {\left ({\left (a^{13} b^{3} + 4 \, a^{11} b^{5} + 6 \, a^{9} b^{7} + 4 \, a^{7} b^{9} + a^{5} b^{11}\right )} d \tan \left (d x + c\right )^{4} + 3 \, {\left (a^{14} b^{2} + 4 \, a^{12} b^{4} + 6 \, a^{10} b^{6} + 4 \, a^{8} b^{8} + a^{6} b^{10}\right )} d \tan \left (d x + c\right )^{3} + 3 \, {\left (a^{15} b + 4 \, a^{13} b^{3} + 6 \, a^{11} b^{5} + 4 \, a^{9} b^{7} + a^{7} b^{9}\right )} d \tan \left (d x + c\right )^{2} + {\left (a^{16} + 4 \, a^{14} b^{2} + 6 \, a^{12} b^{4} + 4 \, a^{10} b^{6} + a^{8} b^{8}\right )} d \tan \left (d x + c\right )\right )}} \]
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Exception generated. \[ \int \frac {\cot ^2(c+d x)}{(a+b \tan (c+d x))^4} \, dx=\text {Exception raised: AttributeError} \]
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none
Time = 0.62 (sec) , antiderivative size = 516, normalized size of antiderivative = 1.86 \[ \int \frac {\cot ^2(c+d x)}{(a+b \tan (c+d x))^4} \, dx=-\frac {\frac {3 \, {\left (a^{4} - 6 \, a^{2} b^{2} + b^{4}\right )} {\left (d x + c\right )}}{a^{8} + 4 \, a^{6} b^{2} + 6 \, a^{4} b^{4} + 4 \, a^{2} b^{6} + b^{8}} - \frac {12 \, {\left (5 \, a^{6} b^{3} + 6 \, a^{4} b^{5} + 4 \, a^{2} b^{7} + b^{9}\right )} \log \left (b \tan \left (d x + c\right ) + a\right )}{a^{13} + 4 \, a^{11} b^{2} + 6 \, a^{9} b^{4} + 4 \, a^{7} b^{6} + a^{5} b^{8}} - \frac {6 \, {\left (a^{3} b - a b^{3}\right )} \log \left (\tan \left (d x + c\right )^{2} + 1\right )}{a^{8} + 4 \, a^{6} b^{2} + 6 \, a^{4} b^{4} + 4 \, a^{2} b^{6} + b^{8}} + \frac {3 \, a^{9} + 9 \, a^{7} b^{2} + 9 \, a^{5} b^{4} + 3 \, a^{3} b^{6} + 3 \, {\left (a^{6} b^{3} + 13 \, a^{4} b^{5} + 12 \, a^{2} b^{7} + 4 \, b^{9}\right )} \tan \left (d x + c\right )^{3} + 3 \, {\left (3 \, a^{7} b^{2} + 31 \, a^{5} b^{4} + 30 \, a^{3} b^{6} + 10 \, a b^{8}\right )} \tan \left (d x + c\right )^{2} + {\left (9 \, a^{8} b + 64 \, a^{6} b^{3} + 65 \, a^{4} b^{5} + 22 \, a^{2} b^{7}\right )} \tan \left (d x + c\right )}{{\left (a^{10} b^{3} + 3 \, a^{8} b^{5} + 3 \, a^{6} b^{7} + a^{4} b^{9}\right )} \tan \left (d x + c\right )^{4} + 3 \, {\left (a^{11} b^{2} + 3 \, a^{9} b^{4} + 3 \, a^{7} b^{6} + a^{5} b^{8}\right )} \tan \left (d x + c\right )^{3} + 3 \, {\left (a^{12} b + 3 \, a^{10} b^{3} + 3 \, a^{8} b^{5} + a^{6} b^{7}\right )} \tan \left (d x + c\right )^{2} + {\left (a^{13} + 3 \, a^{11} b^{2} + 3 \, a^{9} b^{4} + a^{7} b^{6}\right )} \tan \left (d x + c\right )} + \frac {12 \, b \log \left (\tan \left (d x + c\right )\right )}{a^{5}}}{3 \, d} \]
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Time = 1.06 (sec) , antiderivative size = 502, normalized size of antiderivative = 1.81 \[ \int \frac {\cot ^2(c+d x)}{(a+b \tan (c+d x))^4} \, dx=-\frac {\frac {3 \, {\left (a^{4} - 6 \, a^{2} b^{2} + b^{4}\right )} {\left (d x + c\right )}}{a^{8} + 4 \, a^{6} b^{2} + 6 \, a^{4} b^{4} + 4 \, a^{2} b^{6} + b^{8}} - \frac {6 \, {\left (a^{3} b - a b^{3}\right )} \log \left (\tan \left (d x + c\right )^{2} + 1\right )}{a^{8} + 4 \, a^{6} b^{2} + 6 \, a^{4} b^{4} + 4 \, a^{2} b^{6} + b^{8}} - \frac {12 \, {\left (5 \, a^{6} b^{4} + 6 \, a^{4} b^{6} + 4 \, a^{2} b^{8} + b^{10}\right )} \log \left ({\left | b \tan \left (d x + c\right ) + a \right |}\right )}{a^{13} b + 4 \, a^{11} b^{3} + 6 \, a^{9} b^{5} + 4 \, a^{7} b^{7} + a^{5} b^{9}} + \frac {110 \, a^{6} b^{6} \tan \left (d x + c\right )^{3} + 132 \, a^{4} b^{8} \tan \left (d x + c\right )^{3} + 88 \, a^{2} b^{10} \tan \left (d x + c\right )^{3} + 22 \, b^{12} \tan \left (d x + c\right )^{3} + 360 \, a^{7} b^{5} \tan \left (d x + c\right )^{2} + 453 \, a^{5} b^{7} \tan \left (d x + c\right )^{2} + 300 \, a^{3} b^{9} \tan \left (d x + c\right )^{2} + 75 \, a b^{11} \tan \left (d x + c\right )^{2} + 396 \, a^{8} b^{4} \tan \left (d x + c\right ) + 525 \, a^{6} b^{6} \tan \left (d x + c\right ) + 348 \, a^{4} b^{8} \tan \left (d x + c\right ) + 87 \, a^{2} b^{10} \tan \left (d x + c\right ) + 147 \, a^{9} b^{3} + 207 \, a^{7} b^{5} + 139 \, a^{5} b^{7} + 35 \, a^{3} b^{9}}{{\left (a^{13} + 4 \, a^{11} b^{2} + 6 \, a^{9} b^{4} + 4 \, a^{7} b^{6} + a^{5} b^{8}\right )} {\left (b \tan \left (d x + c\right ) + a\right )}^{3}} + \frac {12 \, b \log \left ({\left | \tan \left (d x + c\right ) \right |}\right )}{a^{5}} - \frac {3 \, {\left (4 \, b \tan \left (d x + c\right ) - a\right )}}{a^{5} \tan \left (d x + c\right )}}{3 \, d} \]
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Time = 7.10 (sec) , antiderivative size = 430, normalized size of antiderivative = 1.55 \[ \int \frac {\cot ^2(c+d x)}{(a+b \tan (c+d x))^4} \, dx=\frac {4\,b^3\,\ln \left (a+b\,\mathrm {tan}\left (c+d\,x\right )\right )\,\left (5\,a^6+6\,a^4\,b^2+4\,a^2\,b^4+b^6\right )}{a^5\,d\,{\left (a^2+b^2\right )}^4}-\frac {\frac {1}{a}+\frac {{\mathrm {tan}\left (c+d\,x\right )}^3\,\left (a^6\,b^3+13\,a^4\,b^5+12\,a^2\,b^7+4\,b^9\right )}{a^4\,\left (a^6+3\,a^4\,b^2+3\,a^2\,b^4+b^6\right )}+\frac {{\mathrm {tan}\left (c+d\,x\right )}^2\,\left (3\,a^6\,b^2+31\,a^4\,b^4+30\,a^2\,b^6+10\,b^8\right )}{a^3\,\left (a^6+3\,a^4\,b^2+3\,a^2\,b^4+b^6\right )}+\frac {\mathrm {tan}\left (c+d\,x\right )\,\left (9\,a^6\,b+64\,a^4\,b^3+65\,a^2\,b^5+22\,b^7\right )}{3\,a^2\,\left (a^6+3\,a^4\,b^2+3\,a^2\,b^4+b^6\right )}}{d\,\left (a^3\,\mathrm {tan}\left (c+d\,x\right )+3\,a^2\,b\,{\mathrm {tan}\left (c+d\,x\right )}^2+3\,a\,b^2\,{\mathrm {tan}\left (c+d\,x\right )}^3+b^3\,{\mathrm {tan}\left (c+d\,x\right )}^4\right )}-\frac {4\,b\,\ln \left (\mathrm {tan}\left (c+d\,x\right )\right )}{a^5\,d}-\frac {\ln \left (\mathrm {tan}\left (c+d\,x\right )-\mathrm {i}\right )}{2\,d\,\left (a^4\,1{}\mathrm {i}-4\,a^3\,b-a^2\,b^2\,6{}\mathrm {i}+4\,a\,b^3+b^4\,1{}\mathrm {i}\right )}-\frac {\ln \left (\mathrm {tan}\left (c+d\,x\right )+1{}\mathrm {i}\right )\,1{}\mathrm {i}}{2\,d\,\left (a^4-a^3\,b\,4{}\mathrm {i}-6\,a^2\,b^2+a\,b^3\,4{}\mathrm {i}+b^4\right )} \]
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