Integrand size = 21, antiderivative size = 56 \[ \int \cos (c+d x) \sqrt {a+a \cos (c+d x)} \, dx=\frac {2 a \sin (c+d x)}{3 d \sqrt {a+a \cos (c+d x)}}+\frac {2 \sqrt {a+a \cos (c+d x)} \sin (c+d x)}{3 d} \]
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Time = 0.06 (sec) , antiderivative size = 56, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.095, Rules used = {2830, 2725} \[ \int \cos (c+d x) \sqrt {a+a \cos (c+d x)} \, dx=\frac {2 \sin (c+d x) \sqrt {a \cos (c+d x)+a}}{3 d}+\frac {2 a \sin (c+d x)}{3 d \sqrt {a \cos (c+d x)+a}} \]
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Rule 2725
Rule 2830
Rubi steps \begin{align*} \text {integral}& = \frac {2 \sqrt {a+a \cos (c+d x)} \sin (c+d x)}{3 d}+\frac {1}{3} \int \sqrt {a+a \cos (c+d x)} \, dx \\ & = \frac {2 a \sin (c+d x)}{3 d \sqrt {a+a \cos (c+d x)}}+\frac {2 \sqrt {a+a \cos (c+d x)} \sin (c+d x)}{3 d} \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 54, normalized size of antiderivative = 0.96 \[ \int \cos (c+d x) \sqrt {a+a \cos (c+d x)} \, dx=\frac {\sqrt {a (1+\cos (c+d x))} \sec \left (\frac {1}{2} (c+d x)\right ) \left (3 \sin \left (\frac {1}{2} (c+d x)\right )+\sin \left (\frac {3}{2} (c+d x)\right )\right )}{3 d} \]
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Time = 0.78 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.04
method | result | size |
default | \(\frac {2 \cos \left (\frac {d x}{2}+\frac {c}{2}\right ) a \sin \left (\frac {d x}{2}+\frac {c}{2}\right ) \left (1+2 \left (\cos ^{2}\left (\frac {d x}{2}+\frac {c}{2}\right )\right )\right ) \sqrt {2}}{3 \sqrt {a \left (\cos ^{2}\left (\frac {d x}{2}+\frac {c}{2}\right )\right )}\, d}\) | \(58\) |
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Time = 0.26 (sec) , antiderivative size = 40, normalized size of antiderivative = 0.71 \[ \int \cos (c+d x) \sqrt {a+a \cos (c+d x)} \, dx=\frac {2 \, \sqrt {a \cos \left (d x + c\right ) + a} {\left (\cos \left (d x + c\right ) + 2\right )} \sin \left (d x + c\right )}{3 \, {\left (d \cos \left (d x + c\right ) + d\right )}} \]
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\[ \int \cos (c+d x) \sqrt {a+a \cos (c+d x)} \, dx=\int \sqrt {a \left (\cos {\left (c + d x \right )} + 1\right )} \cos {\left (c + d x \right )}\, dx \]
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Time = 0.39 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.64 \[ \int \cos (c+d x) \sqrt {a+a \cos (c+d x)} \, dx=\frac {{\left (\sqrt {2} \sin \left (\frac {3}{2} \, d x + \frac {3}{2} \, c\right ) + 3 \, \sqrt {2} \sin \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )\right )} \sqrt {a}}{3 \, d} \]
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Time = 0.55 (sec) , antiderivative size = 53, normalized size of antiderivative = 0.95 \[ \int \cos (c+d x) \sqrt {a+a \cos (c+d x)} \, dx=\frac {\sqrt {2} {\left (\mathrm {sgn}\left (\cos \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )\right ) \sin \left (\frac {3}{2} \, d x + \frac {3}{2} \, c\right ) + 3 \, \mathrm {sgn}\left (\cos \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )\right ) \sin \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )\right )} \sqrt {a}}{3 \, d} \]
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Timed out. \[ \int \cos (c+d x) \sqrt {a+a \cos (c+d x)} \, dx=\int \cos \left (c+d\,x\right )\,\sqrt {a+a\,\cos \left (c+d\,x\right )} \,d x \]
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