Integrand size = 24, antiderivative size = 27 \[ \int \frac {\sec ^2(c+d x)}{(a+i a \tan (c+d x))^4} \, dx=\frac {i}{3 a d (a+i a \tan (c+d x))^3} \]
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Time = 0.07 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.083, Rules used = {3568, 32} \[ \int \frac {\sec ^2(c+d x)}{(a+i a \tan (c+d x))^4} \, dx=\frac {i}{3 a d (a+i a \tan (c+d x))^3} \]
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Rule 32
Rule 3568
Rubi steps \begin{align*} \text {integral}& = -\frac {i \text {Subst}\left (\int \frac {1}{(a+x)^4} \, dx,x,i a \tan (c+d x)\right )}{a d} \\ & = \frac {i}{3 a d (a+i a \tan (c+d x))^3} \\ \end{align*}
Time = 0.18 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.81 \[ \int \frac {\sec ^2(c+d x)}{(a+i a \tan (c+d x))^4} \, dx=-\frac {1}{3 a^4 d (-i+\tan (c+d x))^3} \]
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Time = 0.48 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.89
method | result | size |
derivativedivides | \(\frac {i}{3 a d \left (a +i a \tan \left (d x +c \right )\right )^{3}}\) | \(24\) |
default | \(\frac {i}{3 a d \left (a +i a \tan \left (d x +c \right )\right )^{3}}\) | \(24\) |
risch | \(\frac {i {\mathrm e}^{-2 i \left (d x +c \right )}}{8 a^{4} d}+\frac {i {\mathrm e}^{-4 i \left (d x +c \right )}}{8 a^{4} d}+\frac {i {\mathrm e}^{-6 i \left (d x +c \right )}}{24 a^{4} d}\) | \(56\) |
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none
Time = 0.23 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.52 \[ \int \frac {\sec ^2(c+d x)}{(a+i a \tan (c+d x))^4} \, dx=\frac {{\left (3 i \, e^{\left (4 i \, d x + 4 i \, c\right )} + 3 i \, e^{\left (2 i \, d x + 2 i \, c\right )} + i\right )} e^{\left (-6 i \, d x - 6 i \, c\right )}}{24 \, a^{4} d} \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 272 vs. \(2 (19) = 38\).
Time = 1.20 (sec) , antiderivative size = 272, normalized size of antiderivative = 10.07 \[ \int \frac {\sec ^2(c+d x)}{(a+i a \tan (c+d x))^4} \, dx=\begin {cases} - \frac {i \tan ^{2}{\left (c + d x \right )} \sec ^{2}{\left (c + d x \right )}}{24 a^{4} d \tan ^{4}{\left (c + d x \right )} - 96 i a^{4} d \tan ^{3}{\left (c + d x \right )} - 144 a^{4} d \tan ^{2}{\left (c + d x \right )} + 96 i a^{4} d \tan {\left (c + d x \right )} + 24 a^{4} d} - \frac {4 \tan {\left (c + d x \right )} \sec ^{2}{\left (c + d x \right )}}{24 a^{4} d \tan ^{4}{\left (c + d x \right )} - 96 i a^{4} d \tan ^{3}{\left (c + d x \right )} - 144 a^{4} d \tan ^{2}{\left (c + d x \right )} + 96 i a^{4} d \tan {\left (c + d x \right )} + 24 a^{4} d} + \frac {7 i \sec ^{2}{\left (c + d x \right )}}{24 a^{4} d \tan ^{4}{\left (c + d x \right )} - 96 i a^{4} d \tan ^{3}{\left (c + d x \right )} - 144 a^{4} d \tan ^{2}{\left (c + d x \right )} + 96 i a^{4} d \tan {\left (c + d x \right )} + 24 a^{4} d} & \text {for}\: d \neq 0 \\\frac {x \sec ^{2}{\left (c \right )}}{\left (i a \tan {\left (c \right )} + a\right )^{4}} & \text {otherwise} \end {cases} \]
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Time = 0.19 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.78 \[ \int \frac {\sec ^2(c+d x)}{(a+i a \tan (c+d x))^4} \, dx=\frac {i}{3 \, {\left (i \, a \tan \left (d x + c\right ) + a\right )}^{3} a d} \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 85 vs. \(2 (21) = 42\).
Time = 0.63 (sec) , antiderivative size = 85, normalized size of antiderivative = 3.15 \[ \int \frac {\sec ^2(c+d x)}{(a+i a \tan (c+d x))^4} \, dx=-\frac {2 \, {\left (3 \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{5} - 6 i \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{4} - 10 \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{3} + 6 i \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{2} + 3 \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )\right )}}{3 \, a^{4} d {\left (\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - i\right )}^{6}} \]
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Time = 3.74 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.70 \[ \int \frac {\sec ^2(c+d x)}{(a+i a \tan (c+d x))^4} \, dx=-\frac {1}{3\,a^4\,d\,{\left (\mathrm {tan}\left (c+d\,x\right )-\mathrm {i}\right )}^3} \]
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