Integrand size = 23, antiderivative size = 266 \[ \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx=\frac {d \operatorname {AppellF1}\left (1-n,\frac {1-n}{2},\frac {1-n}{2},2-n,\frac {a+b}{a+b \sec (e+f x)},\frac {a-b}{a+b \sec (e+f x)}\right ) \left (-\frac {b (1-\sec (e+f x))}{a+b \sec (e+f x)}\right )^{\frac {1-n}{2}} \left (\frac {b (1+\sec (e+f x))}{a+b \sec (e+f x)}\right )^{\frac {1-n}{2}} (d \tan (e+f x))^{-1+n} \left (-\tan ^2(e+f x)\right )^{\frac {1-n}{2}+\frac {1}{2} (-1+n)}}{a f (1-n)}-\frac {d \operatorname {Hypergeometric2F1}\left (1,\frac {1+n}{2},\frac {3+n}{2},-\tan ^2(e+f x)\right ) (d \tan (e+f x))^{-1+n} \left (-\tan ^2(e+f x)\right )^{\frac {1-n}{2}+\frac {1+n}{2}}}{a f (1+n)} \]
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\[ \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx=\int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx \\ \end{align*}
Leaf count is larger than twice the leaf count of optimal. \(786\) vs. \(2(266)=532\).
Time = 4.22 (sec) , antiderivative size = 786, normalized size of antiderivative = 2.95 \[ \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx=\frac {2 \left ((a+b) \operatorname {AppellF1}\left (\frac {1+n}{2},n,1,\frac {3+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),-\tan ^2\left (\frac {1}{2} (e+f x)\right )\right )-b \operatorname {AppellF1}\left (\frac {1+n}{2},n,1,\frac {3+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),\frac {(a-b) \tan ^2\left (\frac {1}{2} (e+f x)\right )}{a+b}\right )\right ) \tan \left (\frac {1}{2} (e+f x)\right ) (d \tan (e+f x))^n}{f (a+b \sec (e+f x)) \left (\left ((a+b) \operatorname {AppellF1}\left (\frac {1+n}{2},n,1,\frac {3+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),-\tan ^2\left (\frac {1}{2} (e+f x)\right )\right )-b \operatorname {AppellF1}\left (\frac {1+n}{2},n,1,\frac {3+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),\frac {(a-b) \tan ^2\left (\frac {1}{2} (e+f x)\right )}{a+b}\right )\right ) \sec ^2\left (\frac {1}{2} (e+f x)\right )-16 n \left ((a+b) \operatorname {AppellF1}\left (\frac {1+n}{2},n,1,\frac {3+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),-\tan ^2\left (\frac {1}{2} (e+f x)\right )\right )-b \operatorname {AppellF1}\left (\frac {1+n}{2},n,1,\frac {3+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),\frac {(a-b) \tan ^2\left (\frac {1}{2} (e+f x)\right )}{a+b}\right )\right ) \cos \left (\frac {1}{2} (e+f x)\right ) \csc ^3(e+f x) \sec (e+f x) \sin ^5\left (\frac {1}{2} (e+f x)\right )+2 n \left ((a+b) \operatorname {AppellF1}\left (\frac {1+n}{2},n,1,\frac {3+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),-\tan ^2\left (\frac {1}{2} (e+f x)\right )\right )-b \operatorname {AppellF1}\left (\frac {1+n}{2},n,1,\frac {3+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),\frac {(a-b) \tan ^2\left (\frac {1}{2} (e+f x)\right )}{a+b}\right )\right ) \csc (e+f x) \sec (e+f x) \tan \left (\frac {1}{2} (e+f x)\right )-\frac {2 (1+n) \left ((a-b) b \operatorname {AppellF1}\left (\frac {3+n}{2},n,2,\frac {5+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),\frac {(a-b) \tan ^2\left (\frac {1}{2} (e+f x)\right )}{a+b}\right )+(a+b)^2 \left (\operatorname {AppellF1}\left (\frac {3+n}{2},n,2,\frac {5+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),-\tan ^2\left (\frac {1}{2} (e+f x)\right )\right )-n \operatorname {AppellF1}\left (\frac {3+n}{2},1+n,1,\frac {5+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),-\tan ^2\left (\frac {1}{2} (e+f x)\right )\right )\right )+b (a+b) n \operatorname {AppellF1}\left (\frac {3+n}{2},1+n,1,\frac {5+n}{2},\tan ^2\left (\frac {1}{2} (e+f x)\right ),\frac {(a-b) \tan ^2\left (\frac {1}{2} (e+f x)\right )}{a+b}\right )\right ) \sec ^2\left (\frac {1}{2} (e+f x)\right ) \tan ^2\left (\frac {1}{2} (e+f x)\right )}{(a+b) (3+n)}\right )} \]
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\[\int \frac {\left (d \tan \left (f x +e \right )\right )^{n}}{a +b \sec \left (f x +e \right )}d x\]
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\[ \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx=\int { \frac {\left (d \tan \left (f x + e\right )\right )^{n}}{b \sec \left (f x + e\right ) + a} \,d x } \]
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\[ \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx=\int \frac {\left (d \tan {\left (e + f x \right )}\right )^{n}}{a + b \sec {\left (e + f x \right )}}\, dx \]
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\[ \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx=\int { \frac {\left (d \tan \left (f x + e\right )\right )^{n}}{b \sec \left (f x + e\right ) + a} \,d x } \]
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\[ \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx=\int { \frac {\left (d \tan \left (f x + e\right )\right )^{n}}{b \sec \left (f x + e\right ) + a} \,d x } \]
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Timed out. \[ \int \frac {(d \tan (e+f x))^n}{a+b \sec (e+f x)} \, dx=\int \frac {\cos \left (e+f\,x\right )\,{\left (d\,\mathrm {tan}\left (e+f\,x\right )\right )}^n}{b+a\,\cos \left (e+f\,x\right )} \,d x \]
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