Integrand size = 16, antiderivative size = 17 \[ \int \frac {6 e^3-3 x}{e x^3} \, dx=-2-\frac {3 \left (e^3-x\right )}{e x^2} \]
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Time = 0.00 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.24, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {12, 37} \[ \int \frac {6 e^3-3 x}{e x^3} \, dx=-\frac {3 \left (2 e^3-x\right )^2}{4 e^4 x^2} \]
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Rule 12
Rule 37
Rubi steps \begin{align*} \text {integral}& = \frac {\int \frac {6 e^3-3 x}{x^3} \, dx}{e} \\ & = -\frac {3 \left (2 e^3-x\right )^2}{4 e^4 x^2} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.06 \[ \int \frac {6 e^3-3 x}{e x^3} \, dx=\frac {-\frac {3 e^3}{x^2}+\frac {3}{x}}{e} \]
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Time = 0.07 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.88
method | result | size |
risch | \(\frac {{\mathrm e}^{-1} \left (-3 \,{\mathrm e}^{3}+3 x \right )}{x^{2}}\) | \(15\) |
gosper | \(-\frac {3 \left (-x +{\mathrm e}^{3}\right ) {\mathrm e}^{-1}}{x^{2}}\) | \(16\) |
default | \(3 \,{\mathrm e}^{-1} \left (\frac {1}{x}-\frac {{\mathrm e}^{3}}{x^{2}}\right )\) | \(18\) |
parallelrisch | \(-\frac {{\mathrm e}^{-1} \left (-3 x +3 \,{\mathrm e}^{3}\right )}{x^{2}}\) | \(18\) |
norman | \(\frac {3 \,{\mathrm e}^{-1} x -3 \,{\mathrm e}^{-1} {\mathrm e}^{3}}{x^{2}}\) | \(21\) |
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Time = 0.25 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.76 \[ \int \frac {6 e^3-3 x}{e x^3} \, dx=\frac {3 \, {\left (x - e^{3}\right )} e^{\left (-1\right )}}{x^{2}} \]
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Time = 0.04 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.88 \[ \int \frac {6 e^3-3 x}{e x^3} \, dx=- \frac {- 3 x + 3 e^{3}}{e x^{2}} \]
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Time = 0.19 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.76 \[ \int \frac {6 e^3-3 x}{e x^3} \, dx=\frac {3 \, {\left (x - e^{3}\right )} e^{\left (-1\right )}}{x^{2}} \]
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Time = 0.26 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.76 \[ \int \frac {6 e^3-3 x}{e x^3} \, dx=\frac {3 \, {\left (x - e^{3}\right )} e^{\left (-1\right )}}{x^{2}} \]
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Time = 10.67 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.82 \[ \int \frac {6 e^3-3 x}{e x^3} \, dx=\frac {{\mathrm {e}}^{-1}\,\left (3\,x-3\,{\mathrm {e}}^3\right )}{x^2} \]
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