Integrand size = 64, antiderivative size = 34 \[ \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx=-e^3+\frac {1}{4} e^4 \left (5+\frac {e^x x}{2-e^{3-x}+x}\right ) \]
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\[ \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx=\int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \frac {e^{3 x} \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{4 \left (e^3-2 e^x-e^x x\right )^2} \, dx \\ & = \frac {1}{4} \int \frac {e^{3 x} \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{\left (e^3-2 e^x-e^x x\right )^2} \, dx \\ & = \frac {1}{4} \int \left (-e^{1+2 x} (1+2 x)-\frac {e^{4+3 x} x (3+x)}{\left (e^3-2 e^x-e^x x\right )^2}-\frac {e^{1+3 x} \left (2+5 x+2 x^2\right )}{e^3-2 e^x-e^x x}\right ) \, dx \\ & = -\left (\frac {1}{4} \int e^{1+2 x} (1+2 x) \, dx\right )-\frac {1}{4} \int \frac {e^{4+3 x} x (3+x)}{\left (e^3-2 e^x-e^x x\right )^2} \, dx-\frac {1}{4} \int \frac {e^{1+3 x} \left (2+5 x+2 x^2\right )}{e^3-2 e^x-e^x x} \, dx \\ & = -\frac {1}{8} e^{1+2 x} (1+2 x)+\frac {1}{4} \int e^{1+2 x} \, dx-\frac {1}{4} \int \left (\frac {3 e^{4+3 x} x}{\left (-e^3+2 e^x+e^x x\right )^2}+\frac {e^{4+3 x} x^2}{\left (-e^3+2 e^x+e^x x\right )^2}\right ) \, dx-\frac {1}{4} \int \left (-\frac {2 e^{1+3 x}}{-e^3+2 e^x+e^x x}-\frac {5 e^{1+3 x} x}{-e^3+2 e^x+e^x x}-\frac {2 e^{1+3 x} x^2}{-e^3+2 e^x+e^x x}\right ) \, dx \\ & = \frac {1}{8} e^{1+2 x}-\frac {1}{8} e^{1+2 x} (1+2 x)-\frac {1}{4} \int \frac {e^{4+3 x} x^2}{\left (-e^3+2 e^x+e^x x\right )^2} \, dx+\frac {1}{2} \int \frac {e^{1+3 x}}{-e^3+2 e^x+e^x x} \, dx+\frac {1}{2} \int \frac {e^{1+3 x} x^2}{-e^3+2 e^x+e^x x} \, dx-\frac {3}{4} \int \frac {e^{4+3 x} x}{\left (-e^3+2 e^x+e^x x\right )^2} \, dx+\frac {5}{4} \int \frac {e^{1+3 x} x}{-e^3+2 e^x+e^x x} \, dx \\ \end{align*}
Time = 3.72 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.79 \[ \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx=\frac {e^{4+2 x} x}{4 \left (-e^3+e^x (2+x)\right )} \]
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Time = 0.37 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.62
method | result | size |
parallelrisch | \(\frac {x \,{\mathrm e}^{4} {\mathrm e}^{x}}{4 x -4 \,{\mathrm e}^{-x +3}+8}\) | \(21\) |
norman | \(-\frac {x \,{\mathrm e}^{4} {\mathrm e}^{2 x}}{4 \left (-{\mathrm e}^{x} x +{\mathrm e}^{3}-2 \,{\mathrm e}^{x}\right )}\) | \(24\) |
risch | \(\frac {\left (-x^{2} {\mathrm e}^{4+2 x}-4 x \,{\mathrm e}^{4+2 x}-4 \,{\mathrm e}^{4+2 x}\right ) x}{4 \left (-{\mathrm e}^{x} x +{\mathrm e}^{3}-2 \,{\mathrm e}^{x}\right ) \left (2+x \right )^{2}}\) | \(52\) |
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Time = 0.28 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.65 \[ \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx=\frac {x e^{\left (2 \, x + 4\right )}}{4 \, {\left ({\left (x + 2\right )} e^{x} - e^{3}\right )}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 71 vs. \(2 (26) = 52\).
Time = 0.23 (sec) , antiderivative size = 71, normalized size of antiderivative = 2.09 \[ \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx=\frac {x e^{10}}{- 4 x^{2} e^{3} - 16 x e^{3} + \left (4 x^{3} + 24 x^{2} + 48 x + 32\right ) e^{x} - 16 e^{3}} + \frac {x e^{7}}{4 x^{2} + 16 x + 16} + \frac {x e^{4} e^{x}}{4 x + 8} \]
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Time = 0.24 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.65 \[ \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx=\frac {x e^{\left (2 \, x + 4\right )}}{4 \, {\left ({\left (x + 2\right )} e^{x} - e^{3}\right )}} \]
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Time = 0.26 (sec) , antiderivative size = 42, normalized size of antiderivative = 1.24 \[ \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx=\frac {{\left (x - 3\right )} e^{7} + 3 \, e^{7}}{4 \, {\left ({\left (x - 3\right )} e^{\left (-x + 3\right )} + 5 \, e^{\left (-x + 3\right )} - e^{\left (-2 \, x + 6\right )}\right )}} \]
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Time = 12.26 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.56 \[ \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx=\frac {x\,\left (2\,{\mathrm {e}}^{x+4}\,{\mathrm {e}}^x-{\mathrm {e}}^{x+4}\,{\mathrm {e}}^3+{\mathrm {e}}^7\,{\mathrm {e}}^x+x\,{\mathrm {e}}^{x+4}\,{\mathrm {e}}^x\right )}{4\,\left (x+2\right )\,\left (2\,{\mathrm {e}}^x-{\mathrm {e}}^3+x\,{\mathrm {e}}^x\right )} \]
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