Integrand size = 19, antiderivative size = 18 \[ \int e^{-x} \left (180 x+e^x (5+10 x)\right ) \, dx=\frac {19}{5}+5 (1+x) \left (-36 e^{-x}+x\right ) \]
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Time = 0.03 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.33, number of steps used = 6, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.211, Rules used = {6820, 14, 2207, 2225} \[ \int e^{-x} \left (180 x+e^x (5+10 x)\right ) \, dx=5 x^2-180 e^{-x} x+5 x-180 e^{-x} \]
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Rule 14
Rule 2207
Rule 2225
Rule 6820
Rubi steps \begin{align*} \text {integral}& = \int \left (5+\left (10+180 e^{-x}\right ) x\right ) \, dx \\ & = 5 x+\int \left (10+180 e^{-x}\right ) x \, dx \\ & = 5 x+\int \left (10 x+180 e^{-x} x\right ) \, dx \\ & = 5 x+5 x^2+180 \int e^{-x} x \, dx \\ & = 5 x-180 e^{-x} x+5 x^2+180 \int e^{-x} \, dx \\ & = -180 e^{-x}+5 x-180 e^{-x} x+5 x^2 \\ \end{align*}
Time = 0.11 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.94 \[ \int e^{-x} \left (180 x+e^x (5+10 x)\right ) \, dx=5 e^{-x} (1+x) \left (-36+e^x x\right ) \]
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Time = 0.04 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.11
method | result | size |
risch | \(5 x^{2}+5 x +\left (-180 x -180\right ) {\mathrm e}^{-x}\) | \(20\) |
default | \(-180 x \,{\mathrm e}^{-x}+5 x^{2}-180 \,{\mathrm e}^{-x}+5 x\) | \(23\) |
norman | \(\left (-180-180 x +5 \,{\mathrm e}^{x} x +5 \,{\mathrm e}^{x} x^{2}\right ) {\mathrm e}^{-x}\) | \(23\) |
parallelrisch | \(\left (-180-180 x +5 \,{\mathrm e}^{x} x +5 \,{\mathrm e}^{x} x^{2}\right ) {\mathrm e}^{-x}\) | \(23\) |
parts | \(-180 x \,{\mathrm e}^{-x}+5 x^{2}-180 \,{\mathrm e}^{-x}+5 x\) | \(23\) |
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Time = 0.24 (sec) , antiderivative size = 19, normalized size of antiderivative = 1.06 \[ \int e^{-x} \left (180 x+e^x (5+10 x)\right ) \, dx=5 \, {\left ({\left (x^{2} + x\right )} e^{x} - 36 \, x - 36\right )} e^{\left (-x\right )} \]
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Time = 0.05 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.94 \[ \int e^{-x} \left (180 x+e^x (5+10 x)\right ) \, dx=5 x^{2} + 5 x + \left (- 180 x - 180\right ) e^{- x} \]
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Time = 0.19 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.00 \[ \int e^{-x} \left (180 x+e^x (5+10 x)\right ) \, dx=5 \, x^{2} - 180 \, {\left (x + 1\right )} e^{\left (-x\right )} + 5 \, x \]
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Time = 0.27 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.00 \[ \int e^{-x} \left (180 x+e^x (5+10 x)\right ) \, dx=5 \, x^{2} - 180 \, {\left (x + 1\right )} e^{\left (-x\right )} + 5 \, x \]
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Time = 0.07 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.72 \[ \int e^{-x} \left (180 x+e^x (5+10 x)\right ) \, dx=5\,\left (x-36\,{\mathrm {e}}^{-x}\right )\,\left (x+1\right ) \]
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