Integrand size = 23, antiderivative size = 11 \[ \int \frac {1}{441} e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx=e^{\left (1+\frac {x}{21}\right )^2} \]
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Time = 0.02 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.130, Rules used = {12, 2259, 2240} \[ \int \frac {1}{441} e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx=e^{\frac {1}{441} (x+21)^2} \]
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Rule 12
Rule 2240
Rule 2259
Rubi steps \begin{align*} \text {integral}& = \frac {1}{441} \int e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx \\ & = \frac {1}{441} \int e^{\frac {1}{441} (21+x)^2} (42+2 x) \, dx \\ & = e^{\frac {1}{441} (21+x)^2} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00 \[ \int \frac {1}{441} e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx=e^{\frac {1}{441} (21+x)^2} \]
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Time = 1.17 (sec) , antiderivative size = 9, normalized size of antiderivative = 0.82
method | result | size |
risch | \({\mathrm e}^{\frac {\left (x +21\right )^{2}}{441}}\) | \(9\) |
gosper | \({\mathrm e}^{\frac {1}{441} x^{2}+\frac {2}{21} x +1}\) | \(12\) |
default | \({\mathrm e}^{\frac {1}{441} x^{2}+\frac {2}{21} x +1}\) | \(12\) |
norman | \({\mathrm e}^{\frac {1}{441} x^{2}+\frac {2}{21} x +1}\) | \(12\) |
parallelrisch | \({\mathrm e}^{\frac {1}{441} x^{2}+\frac {2}{21} x +1}\) | \(12\) |
parts | \(-\frac {i \sqrt {\pi }\, \operatorname {erf}\left (\frac {1}{21} i x +i\right ) x}{21}-i \sqrt {\pi }\, \operatorname {erf}\left (\frac {1}{21} i x +i\right )+\sqrt {\pi }\, \left (\operatorname {erf}\left (\frac {1}{21} i x +i\right ) \left (\frac {1}{21} i x +i\right )+\frac {{\mathrm e}^{-\left (\frac {1}{21} i x +i\right )^{2}}}{\sqrt {\pi }}\right )\) | \(68\) |
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Time = 0.26 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00 \[ \int \frac {1}{441} e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx=e^{\left (\frac {1}{441} \, x^{2} + \frac {2}{21} \, x + 1\right )} \]
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Time = 0.04 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.09 \[ \int \frac {1}{441} e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx=e^{\frac {x^{2}}{441} + \frac {2 x}{21} + 1} \]
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Time = 0.19 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00 \[ \int \frac {1}{441} e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx=e^{\left (\frac {1}{441} \, x^{2} + \frac {2}{21} \, x + 1\right )} \]
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Time = 0.26 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00 \[ \int \frac {1}{441} e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx=e^{\left (\frac {1}{441} \, x^{2} + \frac {2}{21} \, x + 1\right )} \]
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Time = 0.12 (sec) , antiderivative size = 13, normalized size of antiderivative = 1.18 \[ \int \frac {1}{441} e^{\frac {1}{441} \left (441+42 x+x^2\right )} (42+2 x) \, dx={\mathrm {e}}^{\frac {2\,x}{21}}\,\mathrm {e}\,{\mathrm {e}}^{\frac {x^2}{441}} \]
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