Integrand size = 30, antiderivative size = 20 \[ \int \frac {40+16 x-56 x^2}{e^3 \left (25 x^2+10 x^3+x^4\right )} \, dx=-\frac {8 (1-x)^2}{e^3 x (5+x)} \]
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Time = 0.02 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.15, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {12, 1608, 27, 907} \[ \int \frac {40+16 x-56 x^2}{e^3 \left (25 x^2+10 x^3+x^4\right )} \, dx=\frac {288}{5 e^3 (x+5)}-\frac {8}{5 e^3 x} \]
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Rule 12
Rule 27
Rule 907
Rule 1608
Rubi steps \begin{align*} \text {integral}& = \frac {\int \frac {40+16 x-56 x^2}{25 x^2+10 x^3+x^4} \, dx}{e^3} \\ & = \frac {\int \frac {40+16 x-56 x^2}{x^2 \left (25+10 x+x^2\right )} \, dx}{e^3} \\ & = \frac {\int \frac {40+16 x-56 x^2}{x^2 (5+x)^2} \, dx}{e^3} \\ & = \frac {\int \left (\frac {8}{5 x^2}-\frac {288}{5 (5+x)^2}\right ) \, dx}{e^3} \\ & = -\frac {8}{5 e^3 x}+\frac {288}{5 e^3 (5+x)} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {40+16 x-56 x^2}{e^3 \left (25 x^2+10 x^3+x^4\right )} \, dx=\frac {8 (-1+7 x)}{e^3 x (5+x)} \]
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Time = 0.14 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.85
method | result | size |
risch | \(\frac {{\mathrm e}^{-3} \left (56 x -8\right )}{\left (5+x \right ) x}\) | \(17\) |
parallelrisch | \(\frac {{\mathrm e}^{-3} \left (56 x -8\right )}{\left (5+x \right ) x}\) | \(19\) |
gosper | \(\frac {8 \left (-1+7 x \right ) {\mathrm e}^{-3}}{x \left (5+x \right )}\) | \(20\) |
default | \(8 \,{\mathrm e}^{-3} \left (-\frac {1}{5 x}+\frac {36}{5 \left (5+x \right )}\right )\) | \(20\) |
norman | \(\frac {56 \,{\mathrm e}^{-3} x -8 \,{\mathrm e}^{-3}}{\left (5+x \right ) x}\) | \(24\) |
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Time = 0.24 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {40+16 x-56 x^2}{e^3 \left (25 x^2+10 x^3+x^4\right )} \, dx=\frac {8 \, {\left (7 \, x - 1\right )} e^{\left (-3\right )}}{x^{2} + 5 \, x} \]
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Time = 0.10 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.95 \[ \int \frac {40+16 x-56 x^2}{e^3 \left (25 x^2+10 x^3+x^4\right )} \, dx=- \frac {8 - 56 x}{x^{2} e^{3} + 5 x e^{3}} \]
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Time = 0.21 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {40+16 x-56 x^2}{e^3 \left (25 x^2+10 x^3+x^4\right )} \, dx=\frac {8 \, {\left (7 \, x - 1\right )} e^{\left (-3\right )}}{x^{2} + 5 \, x} \]
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Time = 0.27 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {40+16 x-56 x^2}{e^3 \left (25 x^2+10 x^3+x^4\right )} \, dx=\frac {8 \, {\left (7 \, x - 1\right )} e^{\left (-3\right )}}{x^{2} + 5 \, x} \]
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Time = 9.52 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.85 \[ \int \frac {40+16 x-56 x^2}{e^3 \left (25 x^2+10 x^3+x^4\right )} \, dx=\frac {8\,{\mathrm {e}}^{-3}\,\left (7\,x-1\right )}{x\,\left (x+5\right )} \]
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