Integrand size = 17, antiderivative size = 16 \[ \int \sqrt {1+3 \cos ^2(x)} \sin (2 x) \, dx=-\frac {2}{9} \left (4-3 \sin ^2(x)\right )^{3/2} \]
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Time = 0.03 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.118, Rules used = {12, 267} \[ \int \sqrt {1+3 \cos ^2(x)} \sin (2 x) \, dx=-\frac {2}{9} \left (4-3 \sin ^2(x)\right )^{3/2} \]
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Rule 12
Rule 267
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int 2 x \sqrt {4-3 x^2} \, dx,x,\sin (x)\right ) \\ & = 2 \text {Subst}\left (\int x \sqrt {4-3 x^2} \, dx,x,\sin (x)\right ) \\ & = -\frac {2}{9} \left (4-3 \sin ^2(x)\right )^{3/2} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00 \[ \int \sqrt {1+3 \cos ^2(x)} \sin (2 x) \, dx=-\frac {2}{9} \left (4-3 \sin ^2(x)\right )^{3/2} \]
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Time = 0.19 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.81
method | result | size |
derivativedivides | \(-\frac {2 {\left (1+3 \left (\cos ^{2}\left (x \right )\right )\right )}^{\frac {3}{2}}}{9}\) | \(13\) |
default | \(-\frac {2 {\left (1+3 \left (\cos ^{2}\left (x \right )\right )\right )}^{\frac {3}{2}}}{9}\) | \(13\) |
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Time = 0.27 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.75 \[ \int \sqrt {1+3 \cos ^2(x)} \sin (2 x) \, dx=-\frac {2}{9} \, {\left (3 \, \cos \left (x\right )^{2} + 1\right )}^{\frac {3}{2}} \]
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Time = 0.94 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.94 \[ \int \sqrt {1+3 \cos ^2(x)} \sin (2 x) \, dx=- \frac {2 \left (3 \cos ^{2}{\left (x \right )} + 1\right )^{\frac {3}{2}}}{9} \]
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Time = 0.19 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.75 \[ \int \sqrt {1+3 \cos ^2(x)} \sin (2 x) \, dx=-\frac {2}{9} \, {\left (3 \, \cos \left (x\right )^{2} + 1\right )}^{\frac {3}{2}} \]
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Time = 0.29 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.75 \[ \int \sqrt {1+3 \cos ^2(x)} \sin (2 x) \, dx=-\frac {2}{9} \, {\left (3 \, \cos \left (x\right )^{2} + 1\right )}^{\frac {3}{2}} \]
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Time = 0.21 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.75 \[ \int \sqrt {1+3 \cos ^2(x)} \sin (2 x) \, dx=-\frac {2\,{\left (3\,{\cos \left (x\right )}^2+1\right )}^{3/2}}{9} \]
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