Integrand size = 9, antiderivative size = 22 \[ \int e^{x^2} x^3 \, dx=-\frac {e^{x^2}}{2}+\frac {1}{2} e^{x^2} x^2 \]
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Time = 0.02 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {2243, 2240} \[ \int e^{x^2} x^3 \, dx=\frac {1}{2} e^{x^2} x^2-\frac {e^{x^2}}{2} \]
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Rule 2240
Rule 2243
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} e^{x^2} x^2-\int e^{x^2} x \, dx \\ & = -\frac {e^{x^2}}{2}+\frac {1}{2} e^{x^2} x^2 \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.64 \[ \int e^{x^2} x^3 \, dx=\frac {1}{2} e^{x^2} \left (-1+x^2\right ) \]
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Time = 0.02 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.55
method | result | size |
gosper | \(\frac {\left (x^{2}-1\right ) {\mathrm e}^{x^{2}}}{2}\) | \(12\) |
risch | \(\left (\frac {x^{2}}{2}-\frac {1}{2}\right ) {\mathrm e}^{x^{2}}\) | \(13\) |
meijerg | \(\frac {1}{2}-\frac {\left (-2 x^{2}+2\right ) {\mathrm e}^{x^{2}}}{4}\) | \(16\) |
derivativedivides | \(-\frac {{\mathrm e}^{x^{2}}}{2}+\frac {x^{2} {\mathrm e}^{x^{2}}}{2}\) | \(17\) |
default | \(-\frac {{\mathrm e}^{x^{2}}}{2}+\frac {x^{2} {\mathrm e}^{x^{2}}}{2}\) | \(17\) |
norman | \(-\frac {{\mathrm e}^{x^{2}}}{2}+\frac {x^{2} {\mathrm e}^{x^{2}}}{2}\) | \(17\) |
parallelrisch | \(-\frac {{\mathrm e}^{x^{2}}}{2}+\frac {x^{2} {\mathrm e}^{x^{2}}}{2}\) | \(17\) |
parts | \(\frac {\sqrt {\pi }\, \operatorname {erfi}\left (x \right ) x^{3}}{2}-\frac {3 \sqrt {\pi }\, \left (\frac {x^{3} \operatorname {erfi}\left (x \right )}{3}-\frac {2 \left (-\frac {{\mathrm e}^{x^{2}}}{2}+\frac {x^{2} {\mathrm e}^{x^{2}}}{2}\right )}{3 \sqrt {\pi }}\right )}{2}\) | \(46\) |
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none
Time = 0.26 (sec) , antiderivative size = 11, normalized size of antiderivative = 0.50 \[ \int e^{x^2} x^3 \, dx=\frac {1}{2} \, {\left (x^{2} - 1\right )} e^{\left (x^{2}\right )} \]
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Time = 0.03 (sec) , antiderivative size = 10, normalized size of antiderivative = 0.45 \[ \int e^{x^2} x^3 \, dx=\frac {\left (x^{2} - 1\right ) e^{x^{2}}}{2} \]
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none
Time = 0.19 (sec) , antiderivative size = 11, normalized size of antiderivative = 0.50 \[ \int e^{x^2} x^3 \, dx=\frac {1}{2} \, {\left (x^{2} - 1\right )} e^{\left (x^{2}\right )} \]
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none
Time = 0.28 (sec) , antiderivative size = 11, normalized size of antiderivative = 0.50 \[ \int e^{x^2} x^3 \, dx=\frac {1}{2} \, {\left (x^{2} - 1\right )} e^{\left (x^{2}\right )} \]
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Time = 15.79 (sec) , antiderivative size = 11, normalized size of antiderivative = 0.50 \[ \int e^{x^2} x^3 \, dx=\frac {{\mathrm {e}}^{x^2}\,\left (x^2-1\right )}{2} \]
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