\[ \int \frac {\tan ^{\frac {11}{2}}(c+d x)}{(a+b \tan (c+d x))^3} \, dx \]
Optimal antiderivative \[ \frac {a^{\frac {7}{2}} \left (35 a^{4}+102 a^{2} b^{2}+99 b^{4}\right ) \arctan \left (\frac {\sqrt {b}\, \left (\sqrt {\tan }\left (d x +c \right )\right )}{\sqrt {a}}\right )}{4 b^{\frac {9}{2}} \left (a^{2}+b^{2}\right )^{3} d}-\frac {\left (a +b \right ) \left (a^{2}-4 a b +b^{2}\right ) \arctan \left (-1+\sqrt {2}\, \left (\sqrt {\tan }\left (d x +c \right )\right )\right ) \sqrt {2}}{2 \left (a^{2}+b^{2}\right )^{3} d}-\frac {\left (a +b \right ) \left (a^{2}-4 a b +b^{2}\right ) \arctan \left (1+\sqrt {2}\, \left (\sqrt {\tan }\left (d x +c \right )\right )\right ) \sqrt {2}}{2 \left (a^{2}+b^{2}\right )^{3} d}+\frac {\left (a -b \right ) \left (a^{2}+4 a b +b^{2}\right ) \ln \left (1-\sqrt {2}\, \left (\sqrt {\tan }\left (d x +c \right )\right )+\tan \left (d x +c \right )\right ) \sqrt {2}}{4 \left (a^{2}+b^{2}\right )^{3} d}-\frac {\left (a -b \right ) \left (a^{2}+4 a b +b^{2}\right ) \ln \left (1+\sqrt {2}\, \left (\sqrt {\tan }\left (d x +c \right )\right )+\tan \left (d x +c \right )\right ) \sqrt {2}}{4 \left (a^{2}+b^{2}\right )^{3} d}-\frac {a \left (35 a^{4}+67 a^{2} b^{2}+24 b^{4}\right ) \left (\sqrt {\tan }\left (d x +c \right )\right )}{4 b^{4} \left (a^{2}+b^{2}\right )^{2} d}+\frac {\left (35 a^{4}+67 a^{2} b^{2}+8 b^{4}\right ) \left (\tan ^{\frac {3}{2}}\left (d x +c \right )\right )}{12 b^{3} \left (a^{2}+b^{2}\right )^{2} d}-\frac {a^{2} \left (\tan ^{\frac {7}{2}}\left (d x +c \right )\right )}{2 b \left (a^{2}+b^{2}\right ) d \left (a +b \tan \left (d x +c \right )\right )^{2}}-\frac {a^{2} \left (7 a^{2}+15 b^{2}\right ) \left (\tan ^{\frac {5}{2}}\left (d x +c \right )\right )}{4 b^{2} \left (a^{2}+b^{2}\right )^{2} d \left (a +b \tan \left (d x +c \right )\right )} \]
command
integrate(tan(d*x+c)^(11/2)/(a+b*tan(d*x+c))^3,x, algorithm="fricas")
Fricas 1.3.8 (sbcl 2.2.11.debian) via sagemath 9.6 output
\[ \text {output too large to display} \]
Fricas 1.3.7 via sagemath 9.3 output \[ \text {Timed out} \]