Integrand size = 60, antiderivative size = 20 \[ \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx=1+x+\frac {-2-\frac {20}{x}}{4+e^x x} \]
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\[ \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx=\int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{x^2 \left (4+e^x x\right )^2} \, dx \\ & = \int \left (1-\frac {8 \left (10+11 x+x^2\right )}{x^2 \left (4+e^x x\right )^2}+\frac {2 \left (20+11 x+x^2\right )}{x^2 \left (4+e^x x\right )}\right ) \, dx \\ & = x+2 \int \frac {20+11 x+x^2}{x^2 \left (4+e^x x\right )} \, dx-8 \int \frac {10+11 x+x^2}{x^2 \left (4+e^x x\right )^2} \, dx \\ & = x+2 \int \left (\frac {1}{4+e^x x}+\frac {20}{x^2 \left (4+e^x x\right )}+\frac {11}{x \left (4+e^x x\right )}\right ) \, dx-8 \int \left (\frac {1}{\left (4+e^x x\right )^2}+\frac {10}{x^2 \left (4+e^x x\right )^2}+\frac {11}{x \left (4+e^x x\right )^2}\right ) \, dx \\ & = x+2 \int \frac {1}{4+e^x x} \, dx-8 \int \frac {1}{\left (4+e^x x\right )^2} \, dx+22 \int \frac {1}{x \left (4+e^x x\right )} \, dx+40 \int \frac {1}{x^2 \left (4+e^x x\right )} \, dx-80 \int \frac {1}{x^2 \left (4+e^x x\right )^2} \, dx-88 \int \frac {1}{x \left (4+e^x x\right )^2} \, dx \\ \end{align*}
Time = 2.09 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.95 \[ \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx=x-\frac {2 (10+x)}{x \left (4+e^x x\right )} \]
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Time = 0.14 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.95
method | result | size |
risch | \(x -\frac {2 \left (x +10\right )}{x \left ({\mathrm e}^{x} x +4\right )}\) | \(19\) |
norman | \(\frac {-20-2 x +{\mathrm e}^{x} x^{3}+4 x^{2}}{x \left ({\mathrm e}^{x} x +4\right )}\) | \(29\) |
parallelrisch | \(\frac {-20-2 x +{\mathrm e}^{x} x^{3}+4 x^{2}}{x \left ({\mathrm e}^{x} x +4\right )}\) | \(29\) |
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Time = 0.27 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.45 \[ \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx=\frac {x^{3} e^{x} + 4 \, x^{2} - 2 \, x - 20}{x^{2} e^{x} + 4 \, x} \]
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Time = 0.06 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.85 \[ \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx=x + \frac {- 2 x - 20}{x^{2} e^{x} + 4 x} \]
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Time = 0.22 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.45 \[ \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx=\frac {x^{3} e^{x} + 4 \, x^{2} - 2 \, x - 20}{x^{2} e^{x} + 4 \, x} \]
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Time = 0.27 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.45 \[ \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx=\frac {x^{3} e^{x} + 4 \, x^{2} - 2 \, x - 20}{x^{2} e^{x} + 4 \, x} \]
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Time = 16.07 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.00 \[ \int \frac {80+16 x^2+e^{2 x} x^4+e^x \left (40 x+22 x^2+10 x^3\right )}{16 x^2+8 e^x x^3+e^{2 x} x^4} \, dx=x-\frac {2\,x+20}{x\,\left (x\,{\mathrm {e}}^x+4\right )} \]
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