Integrand size = 37, antiderivative size = 31 \[ \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{169+78 x+9 x^2} \, dx=3 e^{-x} \left (\frac {8}{4-\frac {3 (1-x)}{4}}-e^x (3+x)\right ) \]
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Time = 0.15 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.58, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.081, Rules used = {27, 6874, 2228} \[ \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{169+78 x+9 x^2} \, dx=\frac {96 e^{-x}}{3 x+13}-3 x \]
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Rule 27
Rule 2228
Rule 6874
Rubi steps \begin{align*} \text {integral}& = \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{(13+3 x)^2} \, dx \\ & = \int \left (-3-\frac {96 e^{-x} (16+3 x)}{(13+3 x)^2}\right ) \, dx \\ & = -3 x-96 \int \frac {e^{-x} (16+3 x)}{(13+3 x)^2} \, dx \\ & = -3 x+\frac {96 e^{-x}}{13+3 x} \\ \end{align*}
Time = 0.87 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.77 \[ \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{169+78 x+9 x^2} \, dx=-\frac {3 \left (-96 e^{-x}+(13+3 x)^2\right )}{39+9 x} \]
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Time = 0.67 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.58
method | result | size |
default | \(-3 x +\frac {96 \,{\mathrm e}^{-x}}{3 x +13}\) | \(18\) |
risch | \(-3 x +\frac {96 \,{\mathrm e}^{-x}}{3 x +13}\) | \(18\) |
parts | \(-3 x +\frac {96 \,{\mathrm e}^{-x}}{3 x +13}\) | \(18\) |
norman | \(\frac {\left (96+169 \,{\mathrm e}^{x}-9 \,{\mathrm e}^{x} x^{2}\right ) {\mathrm e}^{-x}}{3 x +13}\) | \(26\) |
parallelrisch | \(\frac {\left (288-27 \,{\mathrm e}^{x} x^{2}+507 \,{\mathrm e}^{x}\right ) {\mathrm e}^{-x}}{9 x +39}\) | \(27\) |
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none
Time = 0.25 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.87 \[ \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{169+78 x+9 x^2} \, dx=-\frac {3 \, {\left ({\left (3 \, x^{2} + 13 \, x\right )} e^{x} - 32\right )} e^{\left (-x\right )}}{3 \, x + 13} \]
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Time = 0.05 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.39 \[ \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{169+78 x+9 x^2} \, dx=- 3 x + \frac {96 e^{- x}}{3 x + 13} \]
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\[ \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{169+78 x+9 x^2} \, dx=\int { -\frac {3 \, {\left ({\left (9 \, x^{2} + 78 \, x + 169\right )} e^{x} + 96 \, x + 512\right )} e^{\left (-x\right )}}{9 \, x^{2} + 78 \, x + 169} \,d x } \]
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none
Time = 0.27 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.77 \[ \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{169+78 x+9 x^2} \, dx=-\frac {3 \, {\left (3 \, x^{2} + 13 \, x - 32 \, e^{\left (-x\right )}\right )}}{3 \, x + 13} \]
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Time = 0.14 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.58 \[ \int \frac {e^{-x} \left (-1536-288 x+e^x \left (-507-234 x-27 x^2\right )\right )}{169+78 x+9 x^2} \, dx=\frac {96}{13\,{\mathrm {e}}^x+3\,x\,{\mathrm {e}}^x}-3\,x \]
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