Integrand size = 24, antiderivative size = 82 \[ \int \sec ^6(c+d x) (a+i a \tan (c+d x))^8 \, dx=-\frac {4 i (a+i a \tan (c+d x))^{11}}{11 a^3 d}+\frac {i (a+i a \tan (c+d x))^{12}}{3 a^4 d}-\frac {i (a+i a \tan (c+d x))^{13}}{13 a^5 d} \]
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Time = 0.12 (sec) , antiderivative size = 82, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.083, Rules used = {3568, 45} \[ \int \sec ^6(c+d x) (a+i a \tan (c+d x))^8 \, dx=-\frac {i (a+i a \tan (c+d x))^{13}}{13 a^5 d}+\frac {i (a+i a \tan (c+d x))^{12}}{3 a^4 d}-\frac {4 i (a+i a \tan (c+d x))^{11}}{11 a^3 d} \]
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Rule 45
Rule 3568
Rubi steps \begin{align*} \text {integral}& = -\frac {i \text {Subst}\left (\int (a-x)^2 (a+x)^{10} \, dx,x,i a \tan (c+d x)\right )}{a^5 d} \\ & = -\frac {i \text {Subst}\left (\int \left (4 a^2 (a+x)^{10}-4 a (a+x)^{11}+(a+x)^{12}\right ) \, dx,x,i a \tan (c+d x)\right )}{a^5 d} \\ & = -\frac {4 i (a+i a \tan (c+d x))^{11}}{11 a^3 d}+\frac {i (a+i a \tan (c+d x))^{12}}{3 a^4 d}-\frac {i (a+i a \tan (c+d x))^{13}}{13 a^5 d} \\ \end{align*}
Time = 1.01 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.54 \[ \int \sec ^6(c+d x) (a+i a \tan (c+d x))^8 \, dx=\frac {a^8 (-i+\tan (c+d x))^{11} \left (-46+77 i \tan (c+d x)+33 \tan ^2(c+d x)\right )}{429 d} \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 474 vs. \(2 (70 ) = 140\).
Time = 0.58 (sec) , antiderivative size = 475, normalized size of antiderivative = 5.79
\[\frac {a^{8} \left (\frac {\sin ^{9}\left (d x +c \right )}{13 \cos \left (d x +c \right )^{13}}+\frac {4 \left (\sin ^{9}\left (d x +c \right )\right )}{143 \cos \left (d x +c \right )^{11}}+\frac {8 \left (\sin ^{9}\left (d x +c \right )\right )}{1287 \cos \left (d x +c \right )^{9}}\right )+56 i a^{8} \left (\frac {\sin ^{6}\left (d x +c \right )}{10 \cos \left (d x +c \right )^{10}}+\frac {\sin ^{6}\left (d x +c \right )}{20 \cos \left (d x +c \right )^{8}}+\frac {\sin ^{6}\left (d x +c \right )}{60 \cos \left (d x +c \right )^{6}}\right )-28 a^{8} \left (\frac {\sin ^{7}\left (d x +c \right )}{11 \cos \left (d x +c \right )^{11}}+\frac {4 \left (\sin ^{7}\left (d x +c \right )\right )}{99 \cos \left (d x +c \right )^{9}}+\frac {8 \left (\sin ^{7}\left (d x +c \right )\right )}{693 \cos \left (d x +c \right )^{7}}\right )-8 i a^{8} \left (\frac {\sin ^{8}\left (d x +c \right )}{12 \cos \left (d x +c \right )^{12}}+\frac {\sin ^{8}\left (d x +c \right )}{30 \cos \left (d x +c \right )^{10}}+\frac {\sin ^{8}\left (d x +c \right )}{120 \cos \left (d x +c \right )^{8}}\right )+70 a^{8} \left (\frac {\sin ^{5}\left (d x +c \right )}{9 \cos \left (d x +c \right )^{9}}+\frac {4 \left (\sin ^{5}\left (d x +c \right )\right )}{63 \cos \left (d x +c \right )^{7}}+\frac {8 \left (\sin ^{5}\left (d x +c \right )\right )}{315 \cos \left (d x +c \right )^{5}}\right )-56 i a^{8} \left (\frac {\sin ^{4}\left (d x +c \right )}{8 \cos \left (d x +c \right )^{8}}+\frac {\sin ^{4}\left (d x +c \right )}{12 \cos \left (d x +c \right )^{6}}+\frac {\sin ^{4}\left (d x +c \right )}{24 \cos \left (d x +c \right )^{4}}\right )-28 a^{8} \left (\frac {\sin ^{3}\left (d x +c \right )}{7 \cos \left (d x +c \right )^{7}}+\frac {4 \left (\sin ^{3}\left (d x +c \right )\right )}{35 \cos \left (d x +c \right )^{5}}+\frac {8 \left (\sin ^{3}\left (d x +c \right )\right )}{105 \cos \left (d x +c \right )^{3}}\right )+\frac {4 i a^{8}}{3 \cos \left (d x +c \right )^{6}}-a^{8} \left (-\frac {8}{15}-\frac {\left (\sec ^{4}\left (d x +c \right )\right )}{5}-\frac {4 \left (\sec ^{2}\left (d x +c \right )\right )}{15}\right ) \tan \left (d x +c \right )}{d}\]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 307 vs. \(2 (64) = 128\).
Time = 0.23 (sec) , antiderivative size = 307, normalized size of antiderivative = 3.74 \[ \int \sec ^6(c+d x) (a+i a \tan (c+d x))^8 \, dx=-\frac {4096 \, {\left (-286 i \, a^{8} e^{\left (20 i \, d x + 20 i \, c\right )} - 715 i \, a^{8} e^{\left (18 i \, d x + 18 i \, c\right )} - 1287 i \, a^{8} e^{\left (16 i \, d x + 16 i \, c\right )} - 1716 i \, a^{8} e^{\left (14 i \, d x + 14 i \, c\right )} - 1716 i \, a^{8} e^{\left (12 i \, d x + 12 i \, c\right )} - 1287 i \, a^{8} e^{\left (10 i \, d x + 10 i \, c\right )} - 715 i \, a^{8} e^{\left (8 i \, d x + 8 i \, c\right )} - 286 i \, a^{8} e^{\left (6 i \, d x + 6 i \, c\right )} - 78 i \, a^{8} e^{\left (4 i \, d x + 4 i \, c\right )} - 13 i \, a^{8} e^{\left (2 i \, d x + 2 i \, c\right )} - i \, a^{8}\right )}}{429 \, {\left (d e^{\left (26 i \, d x + 26 i \, c\right )} + 13 \, d e^{\left (24 i \, d x + 24 i \, c\right )} + 78 \, d e^{\left (22 i \, d x + 22 i \, c\right )} + 286 \, d e^{\left (20 i \, d x + 20 i \, c\right )} + 715 \, d e^{\left (18 i \, d x + 18 i \, c\right )} + 1287 \, d e^{\left (16 i \, d x + 16 i \, c\right )} + 1716 \, d e^{\left (14 i \, d x + 14 i \, c\right )} + 1716 \, d e^{\left (12 i \, d x + 12 i \, c\right )} + 1287 \, d e^{\left (10 i \, d x + 10 i \, c\right )} + 715 \, d e^{\left (8 i \, d x + 8 i \, c\right )} + 286 \, d e^{\left (6 i \, d x + 6 i \, c\right )} + 78 \, d e^{\left (4 i \, d x + 4 i \, c\right )} + 13 \, d e^{\left (2 i \, d x + 2 i \, c\right )} + d\right )}} \]
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\[ \int \sec ^6(c+d x) (a+i a \tan (c+d x))^8 \, dx=a^{8} \left (\int \left (- 28 \tan ^{2}{\left (c + d x \right )} \sec ^{6}{\left (c + d x \right )}\right )\, dx + \int 70 \tan ^{4}{\left (c + d x \right )} \sec ^{6}{\left (c + d x \right )}\, dx + \int \left (- 28 \tan ^{6}{\left (c + d x \right )} \sec ^{6}{\left (c + d x \right )}\right )\, dx + \int \tan ^{8}{\left (c + d x \right )} \sec ^{6}{\left (c + d x \right )}\, dx + \int 8 i \tan {\left (c + d x \right )} \sec ^{6}{\left (c + d x \right )}\, dx + \int \left (- 56 i \tan ^{3}{\left (c + d x \right )} \sec ^{6}{\left (c + d x \right )}\right )\, dx + \int 56 i \tan ^{5}{\left (c + d x \right )} \sec ^{6}{\left (c + d x \right )}\, dx + \int \left (- 8 i \tan ^{7}{\left (c + d x \right )} \sec ^{6}{\left (c + d x \right )}\right )\, dx + \int \sec ^{6}{\left (c + d x \right )}\, dx\right ) \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 173 vs. \(2 (64) = 128\).
Time = 0.34 (sec) , antiderivative size = 173, normalized size of antiderivative = 2.11 \[ \int \sec ^6(c+d x) (a+i a \tan (c+d x))^8 \, dx=\frac {33 \, a^{8} \tan \left (d x + c\right )^{13} - 286 i \, a^{8} \tan \left (d x + c\right )^{12} - 1014 \, a^{8} \tan \left (d x + c\right )^{11} + 1716 i \, a^{8} \tan \left (d x + c\right )^{10} + 715 \, a^{8} \tan \left (d x + c\right )^{9} + 2574 i \, a^{8} \tan \left (d x + c\right )^{8} + 5148 \, a^{8} \tan \left (d x + c\right )^{7} - 3432 i \, a^{8} \tan \left (d x + c\right )^{6} + 1287 \, a^{8} \tan \left (d x + c\right )^{5} - 4290 i \, a^{8} \tan \left (d x + c\right )^{4} - 3718 \, a^{8} \tan \left (d x + c\right )^{3} + 1716 i \, a^{8} \tan \left (d x + c\right )^{2} + 429 \, a^{8} \tan \left (d x + c\right )}{429 \, d} \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 173 vs. \(2 (64) = 128\).
Time = 1.11 (sec) , antiderivative size = 173, normalized size of antiderivative = 2.11 \[ \int \sec ^6(c+d x) (a+i a \tan (c+d x))^8 \, dx=\frac {33 \, a^{8} \tan \left (d x + c\right )^{13} - 286 i \, a^{8} \tan \left (d x + c\right )^{12} - 1014 \, a^{8} \tan \left (d x + c\right )^{11} + 1716 i \, a^{8} \tan \left (d x + c\right )^{10} + 715 \, a^{8} \tan \left (d x + c\right )^{9} + 2574 i \, a^{8} \tan \left (d x + c\right )^{8} + 5148 \, a^{8} \tan \left (d x + c\right )^{7} - 3432 i \, a^{8} \tan \left (d x + c\right )^{6} + 1287 \, a^{8} \tan \left (d x + c\right )^{5} - 4290 i \, a^{8} \tan \left (d x + c\right )^{4} - 3718 \, a^{8} \tan \left (d x + c\right )^{3} + 1716 i \, a^{8} \tan \left (d x + c\right )^{2} + 429 \, a^{8} \tan \left (d x + c\right )}{429 \, d} \]
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Time = 5.87 (sec) , antiderivative size = 190, normalized size of antiderivative = 2.32 \[ \int \sec ^6(c+d x) (a+i a \tan (c+d x))^8 \, dx=\frac {a^8\,\sin \left (c+d\,x\right )\,\left (2\,{\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )}^2-1\right )\,\left (-184\,{\sin \left (c+d\,x\right )}^2-184\,{\sin \left (2\,c+2\,d\,x\right )}^2+\frac {\sin \left (2\,c+2\,d\,x\right )\,9867{}\mathrm {i}}{256}-184\,{\sin \left (3\,c+3\,d\,x\right )}^2-184\,{\sin \left (4\,c+4\,d\,x\right )}^2+\frac {\sin \left (4\,c+4\,d\,x\right )\,69069{}\mathrm {i}}{1024}-28\,{\sin \left (5\,c+5\,d\,x\right )}^2-2\,{\sin \left (6\,c+6\,d\,x\right )}^2+\frac {\sin \left (6\,c+6\,d\,x\right )\,42757{}\mathrm {i}}{512}+\frac {\sin \left (8\,c+8\,d\,x\right )\,23023{}\mathrm {i}}{256}+\frac {\sin \left (10\,c+10\,d\,x\right )\,7007{}\mathrm {i}}{512}+\frac {\sin \left (12\,c+12\,d\,x\right )\,1001{}\mathrm {i}}{1024}+429\right )}{429\,d\,{\left ({\sin \left (c+d\,x\right )}^2-1\right )}^7} \]
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