Integrand size = 31, antiderivative size = 21 \[ \int \frac {1}{2} \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx=(5+x) \left (-2+\frac {e^x x}{2}+x^2 (1+x)\right ) \]
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Time = 0.03 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.67, number of steps used = 10, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.129, Rules used = {12, 2227, 2225, 2207} \[ \int \frac {1}{2} \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx=x^4+6 x^3+\frac {e^x x^2}{2}+5 x^2+\frac {5 e^x x}{2}-2 x \]
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Rule 12
Rule 2207
Rule 2225
Rule 2227
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \int \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx \\ & = -2 x+5 x^2+6 x^3+x^4+\frac {1}{2} \int e^x \left (5+7 x+x^2\right ) \, dx \\ & = -2 x+5 x^2+6 x^3+x^4+\frac {1}{2} \int \left (5 e^x+7 e^x x+e^x x^2\right ) \, dx \\ & = -2 x+5 x^2+6 x^3+x^4+\frac {1}{2} \int e^x x^2 \, dx+\frac {5 \int e^x \, dx}{2}+\frac {7}{2} \int e^x x \, dx \\ & = \frac {5 e^x}{2}-2 x+\frac {7 e^x x}{2}+5 x^2+\frac {e^x x^2}{2}+6 x^3+x^4-\frac {7 \int e^x \, dx}{2}-\int e^x x \, dx \\ & = -e^x-2 x+\frac {5 e^x x}{2}+5 x^2+\frac {e^x x^2}{2}+6 x^3+x^4+\int e^x \, dx \\ & = -2 x+\frac {5 e^x x}{2}+5 x^2+\frac {e^x x^2}{2}+6 x^3+x^4 \\ \end{align*}
Time = 0.08 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.48 \[ \int \frac {1}{2} \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx=-2 x+5 x^2+6 x^3+x^4+\frac {1}{2} e^x \left (5 x+x^2\right ) \]
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Time = 0.05 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.38
method | result | size |
risch | \(\frac {\left (x^{2}+5 x \right ) {\mathrm e}^{x}}{2}+x^{4}+6 x^{3}+5 x^{2}-2 x\) | \(29\) |
default | \(-2 x +\frac {{\mathrm e}^{x} x^{2}}{2}+\frac {5 \,{\mathrm e}^{x} x}{2}+5 x^{2}+6 x^{3}+x^{4}\) | \(30\) |
norman | \(-2 x +\frac {{\mathrm e}^{x} x^{2}}{2}+\frac {5 \,{\mathrm e}^{x} x}{2}+5 x^{2}+6 x^{3}+x^{4}\) | \(30\) |
parallelrisch | \(-2 x +\frac {{\mathrm e}^{x} x^{2}}{2}+\frac {5 \,{\mathrm e}^{x} x}{2}+5 x^{2}+6 x^{3}+x^{4}\) | \(30\) |
parts | \(-2 x +\frac {{\mathrm e}^{x} x^{2}}{2}+\frac {5 \,{\mathrm e}^{x} x}{2}+5 x^{2}+6 x^{3}+x^{4}\) | \(30\) |
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Time = 0.24 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.33 \[ \int \frac {1}{2} \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx=x^{4} + 6 \, x^{3} + 5 \, x^{2} + \frac {1}{2} \, {\left (x^{2} + 5 \, x\right )} e^{x} - 2 \, x \]
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Time = 0.06 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.29 \[ \int \frac {1}{2} \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx=x^{4} + 6 x^{3} + 5 x^{2} - 2 x + \frac {\left (x^{2} + 5 x\right ) e^{x}}{2} \]
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Time = 0.18 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.33 \[ \int \frac {1}{2} \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx=x^{4} + 6 \, x^{3} + 5 \, x^{2} + \frac {1}{2} \, {\left (x^{2} + 5 \, x\right )} e^{x} - 2 \, x \]
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Time = 0.32 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.33 \[ \int \frac {1}{2} \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx=x^{4} + 6 \, x^{3} + 5 \, x^{2} + \frac {1}{2} \, {\left (x^{2} + 5 \, x\right )} e^{x} - 2 \, x \]
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Time = 11.10 (sec) , antiderivative size = 26, normalized size of antiderivative = 1.24 \[ \int \frac {1}{2} \left (-4+20 x+36 x^2+8 x^3+e^x \left (5+7 x+x^2\right )\right ) \, dx=\frac {x\,\left (10\,x+5\,{\mathrm {e}}^x+x\,{\mathrm {e}}^x+12\,x^2+2\,x^3-4\right )}{2} \]
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