Integrand size = 44, antiderivative size = 33 \[ \int \frac {1}{5} e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx=2 x+\frac {e^{-x^2} \left (x+\frac {1}{5} e^{x (2+2 x)} x^2\right )}{x} \]
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Time = 0.11 (sec) , antiderivative size = 39, normalized size of antiderivative = 1.18, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {12, 6874, 2240, 2326} \[ \int \frac {1}{5} e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx=e^{-x^2}+\frac {e^{2 x (x+1)-x^2} \left (x^2+x\right )}{5 (x+1)}+2 x \]
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Rule 12
Rule 2240
Rule 2326
Rule 6874
Rubi steps \begin{align*} \text {integral}& = \frac {1}{5} \int e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx \\ & = \frac {1}{5} \int \left (10-10 e^{-x^2} x+e^{-x^2+2 x (1+x)} \left (1+2 x+2 x^2\right )\right ) \, dx \\ & = 2 x+\frac {1}{5} \int e^{-x^2+2 x (1+x)} \left (1+2 x+2 x^2\right ) \, dx-2 \int e^{-x^2} x \, dx \\ & = e^{-x^2}+2 x+\frac {e^{-x^2+2 x (1+x)} \left (x+x^2\right )}{5 (1+x)} \\ \end{align*}
Time = 0.08 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.70 \[ \int \frac {1}{5} e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx=e^{-x^2}+2 x+\frac {1}{5} e^{x (2+x)} x \]
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Time = 0.09 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.61
method | result | size |
risch | \(2 x +{\mathrm e}^{-x^{2}}+\frac {x \,{\mathrm e}^{x \left (2+x \right )}}{5}\) | \(20\) |
default | \(2 x +{\mathrm e}^{-x^{2}}+\frac {{\mathrm e}^{x^{2}+2 x} x}{5}\) | \(22\) |
parts | \(2 x +{\mathrm e}^{-x^{2}}+\frac {{\mathrm e}^{x^{2}+2 x} x}{5}\) | \(22\) |
norman | \(\left (1+2 \,{\mathrm e}^{x^{2}} x +\frac {{\mathrm e}^{2 x^{2}+2 x} x}{5}\right ) {\mathrm e}^{-x^{2}}\) | \(30\) |
parallelrisch | \(\frac {\left (5+10 \,{\mathrm e}^{x^{2}} x +{\mathrm e}^{2 x^{2}+2 x} x \right ) {\mathrm e}^{-x^{2}}}{5}\) | \(30\) |
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Time = 0.25 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.88 \[ \int \frac {1}{5} e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx=\frac {1}{5} \, {\left (x e^{\left (2 \, x^{2} + 2 \, x\right )} + 10 \, x e^{\left (x^{2}\right )} + 5\right )} e^{\left (-x^{2}\right )} \]
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Time = 0.53 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.82 \[ \int \frac {1}{5} e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx=2 x + \frac {x e^{- x^{2}} e^{2 x^{2} + 2 x}}{5} + e^{- x^{2}} \]
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Result contains higher order function than in optimal. Order 4 vs. order 3.
Time = 0.23 (sec) , antiderivative size = 130, normalized size of antiderivative = 3.94 \[ \int \frac {1}{5} e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx=-\frac {1}{10} i \, \sqrt {\pi } \operatorname {erf}\left (i \, x + i\right ) e^{\left (-1\right )} - \frac {1}{5} \, {\left (\frac {{\left (x + 1\right )}^{3} \Gamma \left (\frac {3}{2}, -{\left (x + 1\right )}^{2}\right )}{\left (-{\left (x + 1\right )}^{2}\right )^{\frac {3}{2}}} - \frac {\sqrt {\pi } {\left (x + 1\right )} {\left (\operatorname {erf}\left (\sqrt {-{\left (x + 1\right )}^{2}}\right ) - 1\right )}}{\sqrt {-{\left (x + 1\right )}^{2}}} + 2 \, e^{\left ({\left (x + 1\right )}^{2}\right )}\right )} e^{\left (-1\right )} - \frac {1}{5} \, {\left (\frac {\sqrt {\pi } {\left (x + 1\right )} {\left (\operatorname {erf}\left (\sqrt {-{\left (x + 1\right )}^{2}}\right ) - 1\right )}}{\sqrt {-{\left (x + 1\right )}^{2}}} - e^{\left ({\left (x + 1\right )}^{2}\right )}\right )} e^{\left (-1\right )} + 2 \, x + e^{\left (-x^{2}\right )} \]
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Time = 0.27 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.64 \[ \int \frac {1}{5} e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx=\frac {1}{5} \, x e^{\left (x^{2} + 2 \, x\right )} + 2 \, x + e^{\left (-x^{2}\right )} \]
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Time = 0.20 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.64 \[ \int \frac {1}{5} e^{-x^2} \left (10 e^{x^2}-10 x+e^{2 x+2 x^2} \left (1+2 x+2 x^2\right )\right ) \, dx=2\,x+{\mathrm {e}}^{-x^2}+\frac {x\,{\mathrm {e}}^{x^2+2\,x}}{5} \]
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