Integrand size = 95, antiderivative size = 28 \[ \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx=-\log \left (-e^x+x\right )+\log \left (\left (2-4 \left (-5-2 x+x^2\right )^2\right )^2\right ) \]
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\[ \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx=\int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{\left (e^x-x\right ) \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx \\ & = \int \left (\frac {-1+x}{-e^x+x}+\frac {31-88 x-36 x^2+24 x^3-2 x^4}{49+40 x-12 x^2-8 x^3+2 x^4}\right ) \, dx \\ & = \int \frac {-1+x}{-e^x+x} \, dx+\int \frac {31-88 x-36 x^2+24 x^3-2 x^4}{49+40 x-12 x^2-8 x^3+2 x^4} \, dx \\ & = \int \left (\frac {1}{e^x-x}+\frac {x}{-e^x+x}\right ) \, dx+\text {Subst}\left (\int \frac {-71-96 x+24 x^2+16 x^3-2 x^4}{71-24 x^2+2 x^4} \, dx,x,-1+x\right ) \\ & = \int \frac {1}{e^x-x} \, dx+\int \frac {x}{-e^x+x} \, dx+\text {Subst}\left (\int \frac {x \left (-96+16 x^2\right )}{71-24 x^2+2 x^4} \, dx,x,-1+x\right )+\text {Subst}\left (\int \frac {-71+24 x^2-2 x^4}{71-24 x^2+2 x^4} \, dx,x,-1+x\right ) \\ & = \frac {1}{2} \text {Subst}\left (\int \frac {-96+16 x}{71-24 x+2 x^2} \, dx,x,(-1+x)^2\right )+\int \frac {1}{e^x-x} \, dx+\int \frac {x}{-e^x+x} \, dx+\text {Subst}(\int -1 \, dx,x,-1+x) \\ & = -x+2 \log \left (71-24 (1-x)^2+2 (1-x)^4\right )+\int \frac {1}{e^x-x} \, dx+\int \frac {x}{-e^x+x} \, dx \\ \end{align*}
Time = 2.91 (sec) , antiderivative size = 34, normalized size of antiderivative = 1.21 \[ \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx=-\log \left (e^x-x\right )+2 \log \left (49+40 x-12 x^2-8 x^3+2 x^4\right ) \]
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Time = 0.10 (sec) , antiderivative size = 32, normalized size of antiderivative = 1.14
method | result | size |
parallelrisch | \(-\ln \left (x -{\mathrm e}^{x}\right )+2 \ln \left (x^{4}-4 x^{3}-6 x^{2}+20 x +\frac {49}{2}\right )\) | \(32\) |
norman | \(-\ln \left (x -{\mathrm e}^{x}\right )+2 \ln \left (2 x^{4}-8 x^{3}-12 x^{2}+40 x +49\right )\) | \(34\) |
risch | \(2 \ln \left (2 x^{4}-8 x^{3}-12 x^{2}+40 x +49\right )-\ln \left ({\mathrm e}^{x}-x \right )\) | \(34\) |
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Time = 0.27 (sec) , antiderivative size = 33, normalized size of antiderivative = 1.18 \[ \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx=2 \, \log \left (2 \, x^{4} - 8 \, x^{3} - 12 \, x^{2} + 40 \, x + 49\right ) - \log \left (-x + e^{x}\right ) \]
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Time = 0.10 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.04 \[ \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx=- \log {\left (- x + e^{x} \right )} + 2 \log {\left (2 x^{4} - 8 x^{3} - 12 x^{2} + 40 x + 49 \right )} \]
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Time = 0.22 (sec) , antiderivative size = 33, normalized size of antiderivative = 1.18 \[ \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx=2 \, \log \left (2 \, x^{4} - 8 \, x^{3} - 12 \, x^{2} + 40 \, x + 49\right ) - \log \left (-x + e^{x}\right ) \]
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Time = 0.26 (sec) , antiderivative size = 33, normalized size of antiderivative = 1.18 \[ \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx=2 \, \log \left (2 \, x^{4} - 8 \, x^{3} - 12 \, x^{2} + 40 \, x + 49\right ) - \log \left (x - e^{x}\right ) \]
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Time = 13.94 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.11 \[ \int \frac {49-40 x+36 x^2+40 x^3-14 x^4+e^x \left (31-88 x-36 x^2+24 x^3-2 x^4\right )}{-49 x-40 x^2+12 x^3+8 x^4-2 x^5+e^x \left (49+40 x-12 x^2-8 x^3+2 x^4\right )} \, dx=2\,\ln \left (x^4-4\,x^3-6\,x^2+20\,x+\frac {49}{2}\right )-\ln \left ({\mathrm {e}}^x-x\right ) \]
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