Integrand size = 32, antiderivative size = 97 \[ \int \cot (c+d x) (a+i a \tan (c+d x))^n (A+B \tan (c+d x)) \, dx=\frac {(A-i B) \operatorname {Hypergeometric2F1}\left (1,n,1+n,\frac {1}{2} (1+i \tan (c+d x))\right ) (a+i a \tan (c+d x))^n}{2 d n}-\frac {A \operatorname {Hypergeometric2F1}(1,n,1+n,1+i \tan (c+d x)) (a+i a \tan (c+d x))^n}{d n} \]
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Time = 0.21 (sec) , antiderivative size = 97, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.156, Rules used = {3681, 3562, 70, 3680, 67} \[ \int \cot (c+d x) (a+i a \tan (c+d x))^n (A+B \tan (c+d x)) \, dx=\frac {(A-i B) (a+i a \tan (c+d x))^n \operatorname {Hypergeometric2F1}\left (1,n,n+1,\frac {1}{2} (i \tan (c+d x)+1)\right )}{2 d n}-\frac {A (a+i a \tan (c+d x))^n \operatorname {Hypergeometric2F1}(1,n,n+1,i \tan (c+d x)+1)}{d n} \]
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Rule 67
Rule 70
Rule 3562
Rule 3680
Rule 3681
Rubi steps \begin{align*} \text {integral}& = \frac {A \int \cot (c+d x) (a-i a \tan (c+d x)) (a+i a \tan (c+d x))^n \, dx}{a}+(i A+B) \int (a+i a \tan (c+d x))^n \, dx \\ & = \frac {(a A) \text {Subst}\left (\int \frac {(a+i a x)^{-1+n}}{x} \, dx,x,\tan (c+d x)\right )}{d}+\frac {(a (A-i B)) \text {Subst}\left (\int \frac {(a+x)^{-1+n}}{a-x} \, dx,x,i a \tan (c+d x)\right )}{d} \\ & = \frac {(A-i B) \operatorname {Hypergeometric2F1}\left (1,n,1+n,\frac {1}{2} (1+i \tan (c+d x))\right ) (a+i a \tan (c+d x))^n}{2 d n}-\frac {A \operatorname {Hypergeometric2F1}(1,n,1+n,1+i \tan (c+d x)) (a+i a \tan (c+d x))^n}{d n} \\ \end{align*}
Time = 1.22 (sec) , antiderivative size = 124, normalized size of antiderivative = 1.28 \[ \int \cot (c+d x) (a+i a \tan (c+d x))^n (A+B \tan (c+d x)) \, dx=\frac {(a+i a \tan (c+d x))^n \left ((i A+B) n \operatorname {Hypergeometric2F1}\left (1,1+n,2+n,\frac {1}{2} (1+i \tan (c+d x))\right ) (-i+\tan (c+d x))-2 i ((-i A+B) (1+n)+2 A n \operatorname {Hypergeometric2F1}(1,1+n,2+n,1+i \tan (c+d x)) (-i+\tan (c+d x)))\right )}{4 d n (1+n)} \]
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\[\int \cot \left (d x +c \right ) \left (a +i a \tan \left (d x +c \right )\right )^{n} \left (A +B \tan \left (d x +c \right )\right )d x\]
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\[ \int \cot (c+d x) (a+i a \tan (c+d x))^n (A+B \tan (c+d x)) \, dx=\int { {\left (B \tan \left (d x + c\right ) + A\right )} {\left (i \, a \tan \left (d x + c\right ) + a\right )}^{n} \cot \left (d x + c\right ) \,d x } \]
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\[ \int \cot (c+d x) (a+i a \tan (c+d x))^n (A+B \tan (c+d x)) \, dx=\int \left (i a \left (\tan {\left (c + d x \right )} - i\right )\right )^{n} \left (A + B \tan {\left (c + d x \right )}\right ) \cot {\left (c + d x \right )}\, dx \]
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\[ \int \cot (c+d x) (a+i a \tan (c+d x))^n (A+B \tan (c+d x)) \, dx=\int { {\left (B \tan \left (d x + c\right ) + A\right )} {\left (i \, a \tan \left (d x + c\right ) + a\right )}^{n} \cot \left (d x + c\right ) \,d x } \]
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\[ \int \cot (c+d x) (a+i a \tan (c+d x))^n (A+B \tan (c+d x)) \, dx=\int { {\left (B \tan \left (d x + c\right ) + A\right )} {\left (i \, a \tan \left (d x + c\right ) + a\right )}^{n} \cot \left (d x + c\right ) \,d x } \]
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Timed out. \[ \int \cot (c+d x) (a+i a \tan (c+d x))^n (A+B \tan (c+d x)) \, dx=\int \mathrm {cot}\left (c+d\,x\right )\,\left (A+B\,\mathrm {tan}\left (c+d\,x\right )\right )\,{\left (a+a\,\mathrm {tan}\left (c+d\,x\right )\,1{}\mathrm {i}\right )}^n \,d x \]
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