Integrand size = 125, antiderivative size = 25 \[ \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx=\left (x+\frac {1-2 x}{16 x \left (-e^x+x\right )}\right )^2 \]
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\[ \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx=\int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 \left (e^x-x\right )^3 x^3} \, dx \\ & = \frac {1}{128} \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{\left (e^x-x\right )^3 x^3} \, dx \\ & = \frac {1}{128} \int \left (256 x-\frac {16 (-3+2 x)}{e^x-x}+\frac {(-1+x) (-1+2 x)^2}{x^2 \left (-e^x+x\right )^3}-\frac {1-x-4 x^2+20 x^3-48 x^4+32 x^5}{\left (e^x-x\right )^2 x^3}\right ) \, dx \\ & = x^2+\frac {1}{128} \int \frac {(-1+x) (-1+2 x)^2}{x^2 \left (-e^x+x\right )^3} \, dx-\frac {1}{128} \int \frac {1-x-4 x^2+20 x^3-48 x^4+32 x^5}{\left (e^x-x\right )^2 x^3} \, dx-\frac {1}{8} \int \frac {-3+2 x}{e^x-x} \, dx \\ & = x^2-\frac {1}{128} \int \left (\frac {20}{\left (e^x-x\right )^2}+\frac {1}{\left (e^x-x\right )^2 x^3}-\frac {1}{\left (e^x-x\right )^2 x^2}-\frac {4}{\left (e^x-x\right )^2 x}-\frac {48 x}{\left (e^x-x\right )^2}+\frac {32 x^2}{\left (e^x-x\right )^2}\right ) \, dx+\frac {1}{128} \int \left (\frac {8}{\left (e^x-x\right )^3}-\frac {4 x}{\left (e^x-x\right )^3}-\frac {1}{x^2 \left (-e^x+x\right )^3}+\frac {5}{x \left (-e^x+x\right )^3}\right ) \, dx-\frac {1}{8} \int \left (-\frac {3}{e^x-x}+\frac {2 x}{e^x-x}\right ) \, dx \\ & = x^2-\frac {1}{128} \int \frac {1}{\left (e^x-x\right )^2 x^3} \, dx+\frac {1}{128} \int \frac {1}{\left (e^x-x\right )^2 x^2} \, dx-\frac {1}{128} \int \frac {1}{x^2 \left (-e^x+x\right )^3} \, dx+\frac {1}{32} \int \frac {1}{\left (e^x-x\right )^2 x} \, dx-\frac {1}{32} \int \frac {x}{\left (e^x-x\right )^3} \, dx+\frac {5}{128} \int \frac {1}{x \left (-e^x+x\right )^3} \, dx+\frac {1}{16} \int \frac {1}{\left (e^x-x\right )^3} \, dx-\frac {5}{32} \int \frac {1}{\left (e^x-x\right )^2} \, dx-\frac {1}{4} \int \frac {x}{e^x-x} \, dx-\frac {1}{4} \int \frac {x^2}{\left (e^x-x\right )^2} \, dx+\frac {3}{8} \int \frac {1}{e^x-x} \, dx+\frac {3}{8} \int \frac {x}{\left (e^x-x\right )^2} \, dx \\ \end{align*}
Time = 6.68 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.44 \[ \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx=\frac {\left (1-2 x-16 e^x x^2+16 x^3\right )^2}{256 \left (e^x-x\right )^2 x^2} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(51\) vs. \(2(23)=46\).
Time = 0.10 (sec) , antiderivative size = 52, normalized size of antiderivative = 2.08
method | result | size |
risch | \(x^{2}-\frac {64 x^{4}-64 \,{\mathrm e}^{x} x^{3}-32 x^{3}+32 \,{\mathrm e}^{x} x^{2}-4 x^{2}+4 x -1}{256 x^{2} \left (x -{\mathrm e}^{x}\right )^{2}}\) | \(52\) |
norman | \(\frac {\frac {1}{256}+x^{6}+{\mathrm e}^{2 x} x^{4}-\frac {{\mathrm e}^{x} x^{3}}{4}+\frac {{\mathrm e}^{2 x} x^{2}}{4}-\frac {x}{64}+\frac {x^{2}}{64}+\frac {x^{3}}{8}-2 x^{5} {\mathrm e}^{x}-\frac {{\mathrm e}^{x} x^{2}}{8}}{x^{2} \left (x -{\mathrm e}^{x}\right )^{2}}\) | \(69\) |
parallelrisch | \(\frac {256 \,{\mathrm e}^{2 x} x^{4}-512 x^{5} {\mathrm e}^{x}+256 x^{6}+64 \,{\mathrm e}^{x} x^{3}-64 x^{4}-32 \,{\mathrm e}^{x} x^{2}+32 x^{3}+4 x^{2}-4 x +1}{256 x^{2} \left ({\mathrm e}^{2 x}-2 \,{\mathrm e}^{x} x +x^{2}\right )}\) | \(76\) |
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Leaf count of result is larger than twice the leaf count of optimal. 75 vs. \(2 (26) = 52\).
Time = 0.26 (sec) , antiderivative size = 75, normalized size of antiderivative = 3.00 \[ \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx=\frac {256 \, x^{6} + 256 \, x^{4} e^{\left (2 \, x\right )} - 64 \, x^{4} + 32 \, x^{3} + 4 \, x^{2} - 32 \, {\left (16 \, x^{5} - 2 \, x^{3} + x^{2}\right )} e^{x} - 4 \, x + 1}{256 \, {\left (x^{4} - 2 \, x^{3} e^{x} + x^{2} e^{\left (2 \, x\right )}\right )}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 58 vs. \(2 (17) = 34\).
Time = 0.08 (sec) , antiderivative size = 58, normalized size of antiderivative = 2.32 \[ \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx=x^{2} + \frac {- 16 x^{4} + 8 x^{3} + x^{2} - x + \left (16 x^{3} - 8 x^{2}\right ) e^{x} + \frac {1}{4}}{64 x^{4} - 128 x^{3} e^{x} + 64 x^{2} e^{2 x}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 75 vs. \(2 (26) = 52\).
Time = 0.27 (sec) , antiderivative size = 75, normalized size of antiderivative = 3.00 \[ \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx=\frac {256 \, x^{6} + 256 \, x^{4} e^{\left (2 \, x\right )} - 64 \, x^{4} + 32 \, x^{3} + 4 \, x^{2} - 32 \, {\left (16 \, x^{5} - 2 \, x^{3} + x^{2}\right )} e^{x} - 4 \, x + 1}{256 \, {\left (x^{4} - 2 \, x^{3} e^{x} + x^{2} e^{\left (2 \, x\right )}\right )}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 78 vs. \(2 (26) = 52\).
Time = 0.29 (sec) , antiderivative size = 78, normalized size of antiderivative = 3.12 \[ \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx=\frac {256 \, x^{6} - 512 \, x^{5} e^{x} + 256 \, x^{4} e^{\left (2 \, x\right )} - 64 \, x^{4} + 64 \, x^{3} e^{x} + 32 \, x^{3} - 32 \, x^{2} e^{x} + 4 \, x^{2} - 4 \, x + 1}{256 \, {\left (x^{4} - 2 \, x^{3} e^{x} + x^{2} e^{\left (2 \, x\right )}\right )}} \]
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Time = 12.68 (sec) , antiderivative size = 32, normalized size of antiderivative = 1.28 \[ \int \frac {2 x-6 x^2+4 x^3+16 x^4+256 e^{3 x} x^4-256 x^7+e^{2 x} \left (48 x^3-32 x^4-768 x^5\right )+e^x \left (-1+x+4 x^2-20 x^3-48 x^4+32 x^5+768 x^6\right )}{128 e^{3 x} x^3-384 e^{2 x} x^4+384 e^x x^5-128 x^6} \, dx=\frac {{\left (2\,x+16\,x^2\,{\mathrm {e}}^x-16\,x^3-1\right )}^2}{256\,x^2\,{\left (x-{\mathrm {e}}^x\right )}^2} \]
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