Integrand size = 4, antiderivative size = 34 \[ \int \cos ^6(x) \, dx=\frac {5 x}{16}+\frac {5}{16} \cos (x) \sin (x)+\frac {5}{24} \cos ^3(x) \sin (x)+\frac {1}{6} \cos ^5(x) \sin (x) \]
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Time = 0.02 (sec) , antiderivative size = 34, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.500, Rules used = {2715, 8} \[ \int \cos ^6(x) \, dx=\frac {5 x}{16}+\frac {1}{6} \sin (x) \cos ^5(x)+\frac {5}{24} \sin (x) \cos ^3(x)+\frac {5}{16} \sin (x) \cos (x) \]
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Rule 8
Rule 2715
Rubi steps \begin{align*} \text {integral}& = \frac {1}{6} \cos ^5(x) \sin (x)+\frac {5}{6} \int \cos ^4(x) \, dx \\ & = \frac {5}{24} \cos ^3(x) \sin (x)+\frac {1}{6} \cos ^5(x) \sin (x)+\frac {5}{8} \int \cos ^2(x) \, dx \\ & = \frac {5}{16} \cos (x) \sin (x)+\frac {5}{24} \cos ^3(x) \sin (x)+\frac {1}{6} \cos ^5(x) \sin (x)+\frac {5 \int 1 \, dx}{16} \\ & = \frac {5 x}{16}+\frac {5}{16} \cos (x) \sin (x)+\frac {5}{24} \cos ^3(x) \sin (x)+\frac {1}{6} \cos ^5(x) \sin (x) \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 30, normalized size of antiderivative = 0.88 \[ \int \cos ^6(x) \, dx=\frac {5 x}{16}+\frac {15}{64} \sin (2 x)+\frac {3}{64} \sin (4 x)+\frac {1}{192} \sin (6 x) \]
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Time = 0.39 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.68
method | result | size |
risch | \(\frac {5 x}{16}+\frac {\sin \left (6 x \right )}{192}+\frac {3 \sin \left (4 x \right )}{64}+\frac {15 \sin \left (2 x \right )}{64}\) | \(23\) |
parallelrisch | \(\frac {5 x}{16}+\frac {\sin \left (6 x \right )}{192}+\frac {3 \sin \left (4 x \right )}{64}+\frac {15 \sin \left (2 x \right )}{64}\) | \(23\) |
default | \(\frac {\left (\cos ^{5}\left (x \right )+\frac {5 \left (\cos ^{3}\left (x \right )\right )}{4}+\frac {15 \cos \left (x \right )}{8}\right ) \sin \left (x \right )}{6}+\frac {5 x}{16}\) | \(24\) |
norman | \(\frac {\frac {5 x}{16}-\frac {5 \left (\tan ^{3}\left (\frac {x}{2}\right )\right )}{24}+\frac {15 \left (\tan ^{5}\left (\frac {x}{2}\right )\right )}{4}-\frac {15 \left (\tan ^{7}\left (\frac {x}{2}\right )\right )}{4}+\frac {5 \left (\tan ^{9}\left (\frac {x}{2}\right )\right )}{24}-\frac {11 \left (\tan ^{11}\left (\frac {x}{2}\right )\right )}{8}+\frac {15 x \left (\tan ^{2}\left (\frac {x}{2}\right )\right )}{8}+\frac {75 x \left (\tan ^{4}\left (\frac {x}{2}\right )\right )}{16}+\frac {25 x \left (\tan ^{6}\left (\frac {x}{2}\right )\right )}{4}+\frac {75 x \left (\tan ^{8}\left (\frac {x}{2}\right )\right )}{16}+\frac {15 x \left (\tan ^{10}\left (\frac {x}{2}\right )\right )}{8}+\frac {5 x \left (\tan ^{12}\left (\frac {x}{2}\right )\right )}{16}+\frac {11 \tan \left (\frac {x}{2}\right )}{8}}{\left (1+\tan ^{2}\left (\frac {x}{2}\right )\right )^{6}}\) | \(116\) |
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Time = 0.24 (sec) , antiderivative size = 25, normalized size of antiderivative = 0.74 \[ \int \cos ^6(x) \, dx=\frac {1}{48} \, {\left (8 \, \cos \left (x\right )^{5} + 10 \, \cos \left (x\right )^{3} + 15 \, \cos \left (x\right )\right )} \sin \left (x\right ) + \frac {5}{16} \, x \]
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Time = 0.02 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.06 \[ \int \cos ^6(x) \, dx=\frac {5 x}{16} + \frac {\sin {\left (x \right )} \cos ^{5}{\left (x \right )}}{6} + \frac {5 \sin {\left (x \right )} \cos ^{3}{\left (x \right )}}{24} + \frac {5 \sin {\left (x \right )} \cos {\left (x \right )}}{16} \]
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Time = 0.20 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.71 \[ \int \cos ^6(x) \, dx=-\frac {1}{48} \, \sin \left (2 \, x\right )^{3} + \frac {5}{16} \, x + \frac {3}{64} \, \sin \left (4 \, x\right ) + \frac {1}{4} \, \sin \left (2 \, x\right ) \]
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Time = 0.30 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.65 \[ \int \cos ^6(x) \, dx=\frac {5}{16} \, x + \frac {1}{192} \, \sin \left (6 \, x\right ) + \frac {3}{64} \, \sin \left (4 \, x\right ) + \frac {15}{64} \, \sin \left (2 \, x\right ) \]
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Time = 0.04 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.65 \[ \int \cos ^6(x) \, dx=\frac {5\,x}{16}+\frac {15\,\sin \left (2\,x\right )}{64}+\frac {3\,\sin \left (4\,x\right )}{64}+\frac {\sin \left (6\,x\right )}{192} \]
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