Optimal. Leaf size=94 \[ -\frac{i 2^{n-\frac{5}{2}} \cos ^5(c+d x) (1+i \tan (c+d x))^{\frac{1}{2}-n} (a+i a \tan (c+d x))^{n+2} \text{Hypergeometric2F1}\left (-\frac{5}{2},\frac{7}{2}-n,-\frac{3}{2},\frac{1}{2} (1-i \tan (c+d x))\right )}{5 a^2 d} \]
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Rubi [A] time = 0.193491, antiderivative size = 94, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.167, Rules used = {3505, 3523, 70, 69} \[ -\frac{i 2^{n-\frac{5}{2}} \cos ^5(c+d x) (1+i \tan (c+d x))^{\frac{1}{2}-n} (a+i a \tan (c+d x))^{n+2} \text{Hypergeometric2F1}\left (-\frac{5}{2},\frac{7}{2}-n,-\frac{3}{2},\frac{1}{2} (1-i \tan (c+d x))\right )}{5 a^2 d} \]
Antiderivative was successfully verified.
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Rule 3505
Rule 3523
Rule 70
Rule 69
Rubi steps
\begin{align*} \int \cos ^5(c+d x) (a+i a \tan (c+d x))^n \, dx &=\left (\cos ^5(c+d x) (a-i a \tan (c+d x))^{5/2} (a+i a \tan (c+d x))^{5/2}\right ) \int \frac{(a+i a \tan (c+d x))^{-\frac{5}{2}+n}}{(a-i a \tan (c+d x))^{5/2}} \, dx\\ &=\frac{\left (a^2 \cos ^5(c+d x) (a-i a \tan (c+d x))^{5/2} (a+i a \tan (c+d x))^{5/2}\right ) \operatorname{Subst}\left (\int \frac{(a+i a x)^{-\frac{7}{2}+n}}{(a-i a x)^{7/2}} \, dx,x,\tan (c+d x)\right )}{d}\\ &=\frac{\left (2^{-\frac{7}{2}+n} \cos ^5(c+d x) (a-i a \tan (c+d x))^{5/2} (a+i a \tan (c+d x))^{2+n} \left (\frac{a+i a \tan (c+d x)}{a}\right )^{\frac{1}{2}-n}\right ) \operatorname{Subst}\left (\int \frac{\left (\frac{1}{2}+\frac{i x}{2}\right )^{-\frac{7}{2}+n}}{(a-i a x)^{7/2}} \, dx,x,\tan (c+d x)\right )}{a d}\\ &=-\frac{i 2^{-\frac{5}{2}+n} \cos ^5(c+d x) \, _2F_1\left (-\frac{5}{2},\frac{7}{2}-n;-\frac{3}{2};\frac{1}{2} (1-i \tan (c+d x))\right ) (1+i \tan (c+d x))^{\frac{1}{2}-n} (a+i a \tan (c+d x))^{2+n}}{5 a^2 d}\\ \end{align*}
Mathematica [A] time = 6.01809, size = 149, normalized size = 1.59 \[ -\frac{i 2^{n-5} e^{-5 i (c+d x)} \left (1+e^{2 i (c+d x)}\right )^6 \left (e^{i d x}\right )^n \left (\frac{e^{i (c+d x)}}{1+e^{2 i (c+d x)}}\right )^n \sec ^{-n}(c+d x) (\cos (d x)+i \sin (d x))^{-n} \text{Hypergeometric2F1}\left (1,\frac{7}{2},n-\frac{3}{2},-e^{2 i (c+d x)}\right ) (a+i a \tan (c+d x))^n}{d (2 n-5)} \]
Warning: Unable to verify antiderivative.
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Maple [F] time = 0.734, size = 0, normalized size = 0. \begin{align*} \int \left ( \cos \left ( dx+c \right ) \right ) ^{5} \left ( a+ia\tan \left ( dx+c \right ) \right ) ^{n}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int{\left (i \, a \tan \left (d x + c\right ) + a\right )}^{n} \cos \left (d x + c\right )^{5}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{1}{32} \, \left (\frac{2 \, a e^{\left (2 i \, d x + 2 i \, c\right )}}{e^{\left (2 i \, d x + 2 i \, c\right )} + 1}\right )^{n}{\left (e^{\left (10 i \, d x + 10 i \, c\right )} + 5 \, e^{\left (8 i \, d x + 8 i \, c\right )} + 10 \, e^{\left (6 i \, d x + 6 i \, c\right )} + 10 \, e^{\left (4 i \, d x + 4 i \, c\right )} + 5 \, e^{\left (2 i \, d x + 2 i \, c\right )} + 1\right )} e^{\left (-5 i \, d x - 5 i \, c\right )}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int{\left (i \, a \tan \left (d x + c\right ) + a\right )}^{n} \cos \left (d x + c\right )^{5}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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