Integrand size = 22, antiderivative size = 21 \[ \int \frac {-2+e^{27+x} \left (x-x^2\right )}{9 x^3} \, dx=\frac {-e^{27+x}+\frac {1}{x}-x}{9 x} \]
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Time = 0.03 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.95, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.136, Rules used = {12, 14, 2228} \[ \int \frac {-2+e^{27+x} \left (x-x^2\right )}{9 x^3} \, dx=\frac {1}{9 x^2}-\frac {e^{x+27}}{9 x} \]
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Rule 12
Rule 14
Rule 2228
Rubi steps \begin{align*} \text {integral}& = \frac {1}{9} \int \frac {-2+e^{27+x} \left (x-x^2\right )}{x^3} \, dx \\ & = \frac {1}{9} \int \left (-\frac {2}{x^3}-\frac {e^{27+x} (-1+x)}{x^2}\right ) \, dx \\ & = \frac {1}{9 x^2}-\frac {1}{9} \int \frac {e^{27+x} (-1+x)}{x^2} \, dx \\ & = \frac {1}{9 x^2}-\frac {e^{27+x}}{9 x} \\ \end{align*}
Time = 0.12 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.86 \[ \int \frac {-2+e^{27+x} \left (x-x^2\right )}{9 x^3} \, dx=\frac {1}{9} \left (\frac {1}{x^2}-\frac {e^{27+x}}{x}\right ) \]
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Time = 0.10 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.67
method | result | size |
norman | \(\frac {\frac {1}{9}-\frac {{\mathrm e}^{x +27} x}{9}}{x^{2}}\) | \(14\) |
parallelrisch | \(\frac {1-{\mathrm e}^{x +27} x}{9 x^{2}}\) | \(15\) |
derivativedivides | \(\frac {1}{9 x^{2}}-\frac {{\mathrm e}^{x +27}}{9 x}\) | \(16\) |
default | \(\frac {1}{9 x^{2}}-\frac {{\mathrm e}^{x +27}}{9 x}\) | \(16\) |
risch | \(\frac {1}{9 x^{2}}-\frac {{\mathrm e}^{x +27}}{9 x}\) | \(16\) |
parts | \(\frac {1}{9 x^{2}}-\frac {{\mathrm e}^{x +27}}{9 x}\) | \(16\) |
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Time = 0.23 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.62 \[ \int \frac {-2+e^{27+x} \left (x-x^2\right )}{9 x^3} \, dx=-\frac {x e^{\left (x + 27\right )} - 1}{9 \, x^{2}} \]
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Time = 0.04 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.67 \[ \int \frac {-2+e^{27+x} \left (x-x^2\right )}{9 x^3} \, dx=- \frac {e^{x + 27}}{9 x} + \frac {1}{9 x^{2}} \]
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Result contains higher order function than in optimal. Order 4 vs. order 3.
Time = 0.24 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00 \[ \int \frac {-2+e^{27+x} \left (x-x^2\right )}{9 x^3} \, dx=-\frac {1}{9} \, {\rm Ei}\left (x\right ) e^{27} + \frac {1}{9} \, e^{27} \Gamma \left (-1, -x\right ) + \frac {1}{9 \, x^{2}} \]
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Time = 0.28 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.62 \[ \int \frac {-2+e^{27+x} \left (x-x^2\right )}{9 x^3} \, dx=-\frac {x e^{\left (x + 27\right )} - 1}{9 \, x^{2}} \]
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Time = 12.41 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.62 \[ \int \frac {-2+e^{27+x} \left (x-x^2\right )}{9 x^3} \, dx=-\frac {x\,{\mathrm {e}}^{x+27}-1}{9\,x^2} \]
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