Integrand size = 28, antiderivative size = 25 \[ \int \frac {-x-x^2+e^{25 x^2} \left (-5+250 x^2\right )}{x^2} \, dx=1+\frac {5 e^{25 x^2}}{x}-x-\log (2)-\log (x) \]
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Time = 0.03 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80, number of steps used = 5, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.107, Rules used = {14, 45, 2326} \[ \int \frac {-x-x^2+e^{25 x^2} \left (-5+250 x^2\right )}{x^2} \, dx=\frac {5 e^{25 x^2}}{x}-x-\log (x) \]
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Rule 14
Rule 45
Rule 2326
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {-1-x}{x}+\frac {5 e^{25 x^2} \left (-1+50 x^2\right )}{x^2}\right ) \, dx \\ & = 5 \int \frac {e^{25 x^2} \left (-1+50 x^2\right )}{x^2} \, dx+\int \frac {-1-x}{x} \, dx \\ & = \frac {5 e^{25 x^2}}{x}+\int \left (-1-\frac {1}{x}\right ) \, dx \\ & = \frac {5 e^{25 x^2}}{x}-x-\log (x) \\ \end{align*}
Time = 0.18 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80 \[ \int \frac {-x-x^2+e^{25 x^2} \left (-5+250 x^2\right )}{x^2} \, dx=\frac {5 e^{25 x^2}}{x}-x-\log (x) \]
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Time = 0.03 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.80
method | result | size |
default | \(-x -\ln \left (x \right )+\frac {5 \,{\mathrm e}^{25 x^{2}}}{x}\) | \(20\) |
risch | \(-x -\ln \left (x \right )+\frac {5 \,{\mathrm e}^{25 x^{2}}}{x}\) | \(20\) |
parts | \(-x -\ln \left (x \right )+\frac {5 \,{\mathrm e}^{25 x^{2}}}{x}\) | \(20\) |
parallelrisch | \(-\frac {x \ln \left (x \right )+x^{2}-5 \,{\mathrm e}^{25 x^{2}}}{x}\) | \(22\) |
norman | \(\frac {-x^{2}+5 \,{\mathrm e}^{25 x^{2}}}{x}-\ln \left (x \right )\) | \(24\) |
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none
Time = 0.24 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.84 \[ \int \frac {-x-x^2+e^{25 x^2} \left (-5+250 x^2\right )}{x^2} \, dx=-\frac {x^{2} + x \log \left (x\right ) - 5 \, e^{\left (25 \, x^{2}\right )}}{x} \]
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Time = 0.05 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.56 \[ \int \frac {-x-x^2+e^{25 x^2} \left (-5+250 x^2\right )}{x^2} \, dx=- x - \log {\left (x \right )} + \frac {5 e^{25 x^{2}}}{x} \]
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Result contains higher order function than in optimal. Order 4 vs. order 3.
Time = 0.29 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.44 \[ \int \frac {-x-x^2+e^{25 x^2} \left (-5+250 x^2\right )}{x^2} \, dx=-25 i \, \sqrt {\pi } \operatorname {erf}\left (5 i \, x\right ) - x + \frac {25 \, \sqrt {-x^{2}} \Gamma \left (-\frac {1}{2}, -25 \, x^{2}\right )}{2 \, x} - \log \left (x\right ) \]
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none
Time = 0.27 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.84 \[ \int \frac {-x-x^2+e^{25 x^2} \left (-5+250 x^2\right )}{x^2} \, dx=-\frac {x^{2} + x \log \left (x\right ) - 5 \, e^{\left (25 \, x^{2}\right )}}{x} \]
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Time = 8.35 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.92 \[ \int \frac {-x-x^2+e^{25 x^2} \left (-5+250 x^2\right )}{x^2} \, dx=\frac {5\,{\mathrm {e}}^{25\,x^2}-x^2}{x}-\ln \left (x\right ) \]
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