Integrand size = 31, antiderivative size = 52 \[ \int \frac {\cos ^2(c+d x)}{a \cos (c+d x)+i a \sin (c+d x)} \, dx=\frac {i \cos ^3(c+d x)}{3 a d}+\frac {\sin (c+d x)}{a d}-\frac {\sin ^3(c+d x)}{3 a d} \]
[Out]
Time = 0.13 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.161, Rules used = {3171, 3169, 2713, 2645, 30} \[ \int \frac {\cos ^2(c+d x)}{a \cos (c+d x)+i a \sin (c+d x)} \, dx=-\frac {\sin ^3(c+d x)}{3 a d}+\frac {\sin (c+d x)}{a d}+\frac {i \cos ^3(c+d x)}{3 a d} \]
[In]
[Out]
Rule 30
Rule 2645
Rule 2713
Rule 3169
Rule 3171
Rubi steps \begin{align*} \text {integral}& = -\frac {i \int \cos ^2(c+d x) (i a \cos (c+d x)+a \sin (c+d x)) \, dx}{a^2} \\ & = -\frac {i \int \left (i a \cos ^3(c+d x)+a \cos ^2(c+d x) \sin (c+d x)\right ) \, dx}{a^2} \\ & = -\frac {i \int \cos ^2(c+d x) \sin (c+d x) \, dx}{a}+\frac {\int \cos ^3(c+d x) \, dx}{a} \\ & = \frac {i \text {Subst}\left (\int x^2 \, dx,x,\cos (c+d x)\right )}{a d}-\frac {\text {Subst}\left (\int \left (1-x^2\right ) \, dx,x,-\sin (c+d x)\right )}{a d} \\ & = \frac {i \cos ^3(c+d x)}{3 a d}+\frac {\sin (c+d x)}{a d}-\frac {\sin ^3(c+d x)}{3 a d} \\ \end{align*}
Time = 0.74 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.40 \[ \int \frac {\cos ^2(c+d x)}{a \cos (c+d x)+i a \sin (c+d x)} \, dx=\frac {i \cos (c+d x)}{4 a d}+\frac {i \cos (3 (c+d x))}{12 a d}+\frac {3 \sin (c+d x)}{4 a d}+\frac {\sin (3 (c+d x))}{12 a d} \]
[In]
[Out]
Time = 0.67 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.94
method | result | size |
risch | \(\frac {i {\mathrm e}^{-3 i \left (d x +c \right )}}{12 a d}+\frac {i \cos \left (d x +c \right )}{4 a d}+\frac {3 \sin \left (d x +c \right )}{4 a d}\) | \(49\) |
derivativedivides | \(\frac {-\frac {2}{3 \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )-i\right )^{3}}+\frac {i}{\left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )-i\right )^{2}}+\frac {3}{2 \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )-i\right )}+\frac {2}{4 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )+4 i}}{a d}\) | \(75\) |
default | \(\frac {-\frac {2}{3 \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )-i\right )^{3}}+\frac {i}{\left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )-i\right )^{2}}+\frac {3}{2 \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )-i\right )}+\frac {2}{4 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )+4 i}}{a d}\) | \(75\) |
parallelrisch | \(\frac {2 i+2 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )-6 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{3}+6 i \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{2}}{3 a d \left (2 i \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{3}-\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{4}+2 i \tan \left (\frac {d x}{2}+\frac {c}{2}\right )+1\right )}\) | \(93\) |
[In]
[Out]
none
Time = 0.24 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.79 \[ \int \frac {\cos ^2(c+d x)}{a \cos (c+d x)+i a \sin (c+d x)} \, dx=\frac {{\left (-3 i \, e^{\left (4 i \, d x + 4 i \, c\right )} + 6 i \, e^{\left (2 i \, d x + 2 i \, c\right )} + i\right )} e^{\left (-3 i \, d x - 3 i \, c\right )}}{12 \, a d} \]
[In]
[Out]
Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 126 vs. \(2 (37) = 74\).
Time = 0.17 (sec) , antiderivative size = 126, normalized size of antiderivative = 2.42 \[ \int \frac {\cos ^2(c+d x)}{a \cos (c+d x)+i a \sin (c+d x)} \, dx=\begin {cases} \frac {\left (- 24 i a^{2} d^{2} e^{5 i c} e^{i d x} + 48 i a^{2} d^{2} e^{3 i c} e^{- i d x} + 8 i a^{2} d^{2} e^{i c} e^{- 3 i d x}\right ) e^{- 4 i c}}{96 a^{3} d^{3}} & \text {for}\: a^{3} d^{3} e^{4 i c} \neq 0 \\\frac {x \left (e^{4 i c} + 2 e^{2 i c} + 1\right ) e^{- 3 i c}}{4 a} & \text {otherwise} \end {cases} \]
[In]
[Out]
Exception generated. \[ \int \frac {\cos ^2(c+d x)}{a \cos (c+d x)+i a \sin (c+d x)} \, dx=\text {Exception raised: RuntimeError} \]
[In]
[Out]
none
Time = 0.30 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.29 \[ \int \frac {\cos ^2(c+d x)}{a \cos (c+d x)+i a \sin (c+d x)} \, dx=\frac {\frac {3}{a {\left (\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) + i\right )}} + \frac {9 \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{2} - 12 i \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - 7}{a {\left (\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - i\right )}^{3}}}{6 \, d} \]
[In]
[Out]
Time = 23.33 (sec) , antiderivative size = 78, normalized size of antiderivative = 1.50 \[ \int \frac {\cos ^2(c+d x)}{a \cos (c+d x)+i a \sin (c+d x)} \, dx=\frac {\left (-3\,{\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )}^3+{\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )}^2\,3{}\mathrm {i}+\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )+1{}\mathrm {i}\right )\,2{}\mathrm {i}}{3\,a\,d\,\left (\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )+1{}\mathrm {i}\right )\,{\left (1+\mathrm {tan}\left (\frac {c}{2}+\frac {d\,x}{2}\right )\,1{}\mathrm {i}\right )}^3} \]
[In]
[Out]