Integrand size = 18, antiderivative size = 12 \[ \int \frac {2 x+\sin (2 x)}{(\cos (x)+x \sin (x))^2} \, dx=\frac {2}{1+\frac {\cot (x)}{x}} \]
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Time = 0.08 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.111, Rules used = {6843, 32} \[ \int \frac {2 x+\sin (2 x)}{(\cos (x)+x \sin (x))^2} \, dx=\frac {2}{\frac {\cot (x)}{x}+1} \]
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Rule 32
Rule 6843
Rubi steps \begin{align*} \text {integral}& = -\left (2 \text {Subst}\left (\int \frac {1}{(1+x)^2} \, dx,x,\frac {\cot (x)}{x}\right )\right ) \\ & = \frac {2}{1+\frac {\cot (x)}{x}} \\ \end{align*}
Time = 0.23 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.17 \[ \int \frac {2 x+\sin (2 x)}{(\cos (x)+x \sin (x))^2} \, dx=\frac {2 x \sin (x)}{\cos (x)+x \sin (x)} \]
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Result contains complex when optimal does not.
Time = 3.05 (sec) , antiderivative size = 44, normalized size of antiderivative = 3.67
method | result | size |
risch | \(-\frac {2 i}{x +i}-\frac {4 i x}{\left (x +i\right ) \left (x \,{\mathrm e}^{2 i x}-x +i {\mathrm e}^{2 i x}+i\right )}\) | \(44\) |
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Time = 0.25 (sec) , antiderivative size = 13, normalized size of antiderivative = 1.08 \[ \int \frac {2 x+\sin (2 x)}{(\cos (x)+x \sin (x))^2} \, dx=-\frac {2 \, \cos \left (x\right )}{x \sin \left (x\right ) + \cos \left (x\right )} \]
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\[ \int \frac {2 x+\sin (2 x)}{(\cos (x)+x \sin (x))^2} \, dx=\int \frac {2 x + \sin {\left (2 x \right )}}{\left (x \sin {\left (x \right )} + \cos {\left (x \right )}\right )^{2}}\, dx \]
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Leaf count of result is larger than twice the leaf count of optimal. 78 vs. \(2 (12) = 24\).
Time = 0.28 (sec) , antiderivative size = 78, normalized size of antiderivative = 6.50 \[ \int \frac {2 x+\sin (2 x)}{(\cos (x)+x \sin (x))^2} \, dx=-\frac {2 \, {\left (\cos \left (2 \, x\right )^{2} + 2 \, x \sin \left (2 \, x\right ) + \sin \left (2 \, x\right )^{2} + 2 \, \cos \left (2 \, x\right ) + 1\right )}}{{\left (x^{2} + 1\right )} \cos \left (2 \, x\right )^{2} + {\left (x^{2} + 1\right )} \sin \left (2 \, x\right )^{2} + x^{2} - 2 \, {\left (x^{2} - 1\right )} \cos \left (2 \, x\right ) + 4 \, x \sin \left (2 \, x\right ) + 1} \]
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Time = 0.28 (sec) , antiderivative size = 10, normalized size of antiderivative = 0.83 \[ \int \frac {2 x+\sin (2 x)}{(\cos (x)+x \sin (x))^2} \, dx=-\frac {2}{x \tan \left (x\right ) + 1} \]
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Timed out. \[ \int \frac {2 x+\sin (2 x)}{(\cos (x)+x \sin (x))^2} \, dx=\int \frac {2\,x+\sin \left (2\,x\right )}{{\left (\cos \left (x\right )+x\,\sin \left (x\right )\right )}^2} \,d x \]
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