Integrand size = 16, antiderivative size = 16 \[ \int e^{-n x} \left (a+b e^{n x}\right ) \, dx=-\frac {a e^{-n x}}{n}+b x \]
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Time = 0.01 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {2280, 45} \[ \int e^{-n x} \left (a+b e^{n x}\right ) \, dx=b x-\frac {a e^{-n x}}{n} \]
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Rule 45
Rule 2280
Rubi steps \begin{align*} \text {integral}& = \frac {\text {Subst}\left (\int \frac {a+b x}{x^2} \, dx,x,e^{n x}\right )}{n} \\ & = \frac {\text {Subst}\left (\int \left (\frac {a}{x^2}+\frac {b}{x}\right ) \, dx,x,e^{n x}\right )}{n} \\ & = -\frac {a e^{-n x}}{n}+b x \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00 \[ \int e^{-n x} \left (a+b e^{n x}\right ) \, dx=-\frac {a e^{-n x}}{n}+b x \]
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Time = 0.02 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00
method | result | size |
risch | \(-\frac {a \,{\mathrm e}^{-n x}}{n}+b x\) | \(16\) |
parts | \(-\frac {a \,{\mathrm e}^{-n x}}{n}+b x\) | \(17\) |
derivativedivides | \(\frac {-a \,{\mathrm e}^{-n x}+b \ln \left ({\mathrm e}^{n x}\right )}{n}\) | \(22\) |
default | \(\frac {-a \,{\mathrm e}^{-n x}+b \ln \left ({\mathrm e}^{n x}\right )}{n}\) | \(22\) |
norman | \(\left (b x \,{\mathrm e}^{n x}-\frac {a}{n}\right ) {\mathrm e}^{-n x}\) | \(22\) |
parallelrisch | \(\frac {\left (x \,{\mathrm e}^{n x} b n -a \right ) {\mathrm e}^{-n x}}{n}\) | \(23\) |
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Time = 0.27 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.31 \[ \int e^{-n x} \left (a+b e^{n x}\right ) \, dx=\frac {{\left (b n x e^{\left (n x\right )} - a\right )} e^{\left (-n x\right )}}{n} \]
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Time = 0.05 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.94 \[ \int e^{-n x} \left (a+b e^{n x}\right ) \, dx=b x + \begin {cases} - \frac {a e^{- n x}}{n} & \text {for}\: n \neq 0 \\a x & \text {otherwise} \end {cases} \]
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Time = 0.18 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.94 \[ \int e^{-n x} \left (a+b e^{n x}\right ) \, dx=b x - \frac {a e^{\left (-n x\right )}}{n} \]
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Time = 0.29 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.94 \[ \int e^{-n x} \left (a+b e^{n x}\right ) \, dx=b x - \frac {a e^{\left (-n x\right )}}{n} \]
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Time = 0.07 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.94 \[ \int e^{-n x} \left (a+b e^{n x}\right ) \, dx=b\,x-\frac {a\,{\mathrm {e}}^{-n\,x}}{n} \]
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