Integrand size = 18, antiderivative size = 31 \[ \int \cos (a+b x) \sin ^2(2 a+2 b x) \, dx=\frac {4 \sin ^3(a+b x)}{3 b}-\frac {4 \sin ^5(a+b x)}{5 b} \]
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Time = 0.06 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {4372, 2644, 14} \[ \int \cos (a+b x) \sin ^2(2 a+2 b x) \, dx=\frac {4 \sin ^3(a+b x)}{3 b}-\frac {4 \sin ^5(a+b x)}{5 b} \]
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Rule 14
Rule 2644
Rule 4372
Rubi steps \begin{align*} \text {integral}& = 4 \int \cos ^3(a+b x) \sin ^2(a+b x) \, dx \\ & = \frac {4 \text {Subst}\left (\int x^2 \left (1-x^2\right ) \, dx,x,\sin (a+b x)\right )}{b} \\ & = \frac {4 \text {Subst}\left (\int \left (x^2-x^4\right ) \, dx,x,\sin (a+b x)\right )}{b} \\ & = \frac {4 \sin ^3(a+b x)}{3 b}-\frac {4 \sin ^5(a+b x)}{5 b} \\ \end{align*}
Time = 0.07 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.87 \[ \int \cos (a+b x) \sin ^2(2 a+2 b x) \, dx=\frac {2 (7+3 \cos (2 (a+b x))) \sin ^3(a+b x)}{15 b} \]
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Time = 0.34 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.32
method | result | size |
default | \(\frac {\sin \left (x b +a \right )}{2 b}-\frac {\sin \left (3 x b +3 a \right )}{12 b}-\frac {\sin \left (5 x b +5 a \right )}{20 b}\) | \(41\) |
risch | \(\frac {\sin \left (x b +a \right )}{2 b}-\frac {\sin \left (3 x b +3 a \right )}{12 b}-\frac {\sin \left (5 x b +5 a \right )}{20 b}\) | \(41\) |
parallelrisch | \(\frac {\frac {8 \left (-\tan \left (x b +a \right )^{3}+\tan \left (x b +a \right )\right ) \tan \left (\frac {a}{2}+\frac {x b}{2}\right )^{2}}{15}+\frac {8 \left (2 \tan \left (x b +a \right )^{4}+3 \tan \left (x b +a \right )^{2}+2\right ) \tan \left (\frac {a}{2}+\frac {x b}{2}\right )}{15}+\frac {8 \tan \left (x b +a \right )^{3}}{15}-\frac {8 \tan \left (x b +a \right )}{15}}{b \left (1+\tan \left (\frac {a}{2}+\frac {x b}{2}\right )^{2}\right ) \left (1+\tan \left (x b +a \right )^{2}\right )^{2}}\) | \(111\) |
norman | \(\frac {\frac {16 \tan \left (\frac {a}{2}+\frac {x b}{2}\right )}{15 b}-\frac {8 \tan \left (x b +a \right )}{15 b}+\frac {8 \tan \left (x b +a \right )^{3}}{15 b}+\frac {8 \tan \left (\frac {a}{2}+\frac {x b}{2}\right ) \tan \left (x b +a \right )^{2}}{5 b}+\frac {16 \tan \left (\frac {a}{2}+\frac {x b}{2}\right ) \tan \left (x b +a \right )^{4}}{15 b}+\frac {8 \tan \left (\frac {a}{2}+\frac {x b}{2}\right )^{2} \tan \left (x b +a \right )}{15 b}-\frac {8 \tan \left (\frac {a}{2}+\frac {x b}{2}\right )^{2} \tan \left (x b +a \right )^{3}}{15 b}}{\left (1+\tan \left (\frac {a}{2}+\frac {x b}{2}\right )^{2}\right ) \left (1+\tan \left (x b +a \right )^{2}\right )^{2}}\) | \(158\) |
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Time = 0.25 (sec) , antiderivative size = 33, normalized size of antiderivative = 1.06 \[ \int \cos (a+b x) \sin ^2(2 a+2 b x) \, dx=-\frac {4 \, {\left (3 \, \cos \left (b x + a\right )^{4} - \cos \left (b x + a\right )^{2} - 2\right )} \sin \left (b x + a\right )}{15 \, b} \]
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Leaf count of result is larger than twice the leaf count of optimal. 90 vs. \(2 (26) = 52\).
Time = 0.36 (sec) , antiderivative size = 90, normalized size of antiderivative = 2.90 \[ \int \cos (a+b x) \sin ^2(2 a+2 b x) \, dx=\begin {cases} \frac {7 \sin {\left (a + b x \right )} \sin ^{2}{\left (2 a + 2 b x \right )}}{15 b} + \frac {8 \sin {\left (a + b x \right )} \cos ^{2}{\left (2 a + 2 b x \right )}}{15 b} - \frac {4 \sin {\left (2 a + 2 b x \right )} \cos {\left (a + b x \right )} \cos {\left (2 a + 2 b x \right )}}{15 b} & \text {for}\: b \neq 0 \\x \sin ^{2}{\left (2 a \right )} \cos {\left (a \right )} & \text {otherwise} \end {cases} \]
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Time = 0.21 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.16 \[ \int \cos (a+b x) \sin ^2(2 a+2 b x) \, dx=-\frac {3 \, \sin \left (5 \, b x + 5 \, a\right ) + 5 \, \sin \left (3 \, b x + 3 \, a\right ) - 30 \, \sin \left (b x + a\right )}{60 \, b} \]
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Time = 0.32 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.16 \[ \int \cos (a+b x) \sin ^2(2 a+2 b x) \, dx=-\frac {3 \, \sin \left (5 \, b x + 5 \, a\right ) + 5 \, \sin \left (3 \, b x + 3 \, a\right ) - 30 \, \sin \left (b x + a\right )}{60 \, b} \]
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Time = 0.04 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.84 \[ \int \cos (a+b x) \sin ^2(2 a+2 b x) \, dx=\frac {4\,\left (5\,{\sin \left (a+b\,x\right )}^3-3\,{\sin \left (a+b\,x\right )}^5\right )}{15\,b} \]
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