Integrand size = 7, antiderivative size = 30 \[ \int e^x x \sin (x) \, dx=\frac {1}{2} e^x \cos (x)-\frac {1}{2} e^x x \cos (x)+\frac {1}{2} e^x x \sin (x) \]
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Time = 0.05 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.429, Rules used = {4517, 4553, 4518} \[ \int e^x x \sin (x) \, dx=\frac {1}{2} e^x x \sin (x)+\frac {1}{2} e^x \cos (x)-\frac {1}{2} e^x x \cos (x) \]
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Rule 4517
Rule 4518
Rule 4553
Rubi steps \begin{align*} \text {integral}& = -\frac {1}{2} e^x x \cos (x)+\frac {1}{2} e^x x \sin (x)-\int \left (-\frac {1}{2} e^x \cos (x)+\frac {1}{2} e^x \sin (x)\right ) \, dx \\ & = -\frac {1}{2} e^x x \cos (x)+\frac {1}{2} e^x x \sin (x)+\frac {1}{2} \int e^x \cos (x) \, dx-\frac {1}{2} \int e^x \sin (x) \, dx \\ & = \frac {1}{2} e^x \cos (x)-\frac {1}{2} e^x x \cos (x)+\frac {1}{2} e^x x \sin (x) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.63 \[ \int e^x x \sin (x) \, dx=\frac {1}{2} e^x (\cos (x)-x \cos (x)+x \sin (x)) \]
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Time = 0.24 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.57
method | result | size |
parallelrisch | \(-\frac {\left (\left (x -1\right ) \cos \left (x \right )-x \sin \left (x \right )\right ) {\mathrm e}^{x}}{2}\) | \(17\) |
default | \(\left (-\frac {x}{2}+\frac {1}{2}\right ) {\mathrm e}^{x} \cos \left (x \right )+\frac {{\mathrm e}^{x} x \sin \left (x \right )}{2}\) | \(19\) |
risch | \(\left (-\frac {1}{8}-\frac {i}{8}\right ) \left (-1+i+2 x \right ) {\mathrm e}^{\left (1+i\right ) x}+\left (-\frac {1}{8}+\frac {i}{8}\right ) \left (-1-i+2 x \right ) {\mathrm e}^{\left (1-i\right ) x}\) | \(36\) |
norman | \(\frac {{\mathrm e}^{x} x \tan \left (\frac {x}{2}\right )-\frac {{\mathrm e}^{x} x}{2}-\frac {{\mathrm e}^{x} \tan \left (\frac {x}{2}\right )^{2}}{2}+\frac {{\mathrm e}^{x} x \tan \left (\frac {x}{2}\right )^{2}}{2}+\frac {{\mathrm e}^{x}}{2}}{1+\tan \left (\frac {x}{2}\right )^{2}}\) | \(51\) |
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Time = 0.26 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.57 \[ \int e^x x \sin (x) \, dx=-\frac {1}{2} \, {\left (x - 1\right )} \cos \left (x\right ) e^{x} + \frac {1}{2} \, x e^{x} \sin \left (x\right ) \]
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Time = 0.15 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.90 \[ \int e^x x \sin (x) \, dx=\frac {x e^{x} \sin {\left (x \right )}}{2} - \frac {x e^{x} \cos {\left (x \right )}}{2} + \frac {e^{x} \cos {\left (x \right )}}{2} \]
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Time = 0.19 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.57 \[ \int e^x x \sin (x) \, dx=-\frac {1}{2} \, {\left (x - 1\right )} \cos \left (x\right ) e^{x} + \frac {1}{2} \, x e^{x} \sin \left (x\right ) \]
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Time = 0.26 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.53 \[ \int e^x x \sin (x) \, dx=-\frac {1}{2} \, {\left ({\left (x - 1\right )} \cos \left (x\right ) - x \sin \left (x\right )\right )} e^{x} \]
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Time = 26.39 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.53 \[ \int e^x x \sin (x) \, dx=\frac {{\mathrm {e}}^x\,\left (\cos \left (x\right )-x\,\cos \left (x\right )+x\,\sin \left (x\right )\right )}{2} \]
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