Integrand size = 11, antiderivative size = 22 \[ \int a^{m x} b^{n x} \, dx=\frac {a^{m x} b^{n x}}{m \log (a)+n \log (b)} \]
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Time = 0.02 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.182, Rules used = {2325, 2225} \[ \int a^{m x} b^{n x} \, dx=\frac {a^{m x} b^{n x}}{m \log (a)+n \log (b)} \]
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Rule 2225
Rule 2325
Rubi steps \begin{align*} \text {integral}& = \int e^{x (m \log (a)+n \log (b))} \, dx \\ & = \frac {a^{m x} b^{n x}}{m \log (a)+n \log (b)} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00 \[ \int a^{m x} b^{n x} \, dx=\frac {a^{m x} b^{n x}}{m \log (a)+n \log (b)} \]
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Time = 0.08 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.05
method | result | size |
gosper | \(\frac {a^{m x} b^{n x}}{m \ln \left (a \right )+n \ln \left (b \right )}\) | \(23\) |
risch | \(\frac {a^{m x} b^{n x}}{m \ln \left (a \right )+n \ln \left (b \right )}\) | \(23\) |
parallelrisch | \(\frac {a^{m x} b^{n x}}{m \ln \left (a \right )+n \ln \left (b \right )}\) | \(23\) |
norman | \(\frac {{\mathrm e}^{m x \ln \left (a \right )} {\mathrm e}^{n x \ln \left (b \right )}}{m \ln \left (a \right )+n \ln \left (b \right )}\) | \(25\) |
meijerg | \(-\frac {1-{\mathrm e}^{x n \ln \left (b \right ) \left (1+\frac {m \ln \left (a \right )}{n \ln \left (b \right )}\right )}}{n \ln \left (b \right ) \left (1+\frac {m \ln \left (a \right )}{n \ln \left (b \right )}\right )}\) | \(48\) |
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none
Time = 0.24 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00 \[ \int a^{m x} b^{n x} \, dx=\frac {a^{m x} b^{n x}}{m \log \left (a\right ) + n \log \left (b\right )} \]
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Leaf count of result is larger than twice the leaf count of optimal. 42 vs. \(2 (19) = 38\).
Time = 0.31 (sec) , antiderivative size = 42, normalized size of antiderivative = 1.91 \[ \int a^{m x} b^{n x} \, dx=\begin {cases} \frac {a^{m x} b^{n x}}{m \log {\left (a \right )} + n \log {\left (b \right )}} & \text {for}\: m \neq - \frac {n \log {\left (b \right )}}{\log {\left (a \right )}} \\b^{n x} x e^{- n x \log {\left (b \right )}} & \text {otherwise} \end {cases} \]
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Exception generated. \[ \int a^{m x} b^{n x} \, dx=\text {Exception raised: ValueError} \]
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Result contains complex when optimal does not.
Time = 0.28 (sec) , antiderivative size = 325, normalized size of antiderivative = 14.77 \[ \int a^{m x} b^{n x} \, dx=2 \, {\left (\frac {2 \, {\left (m \log \left ({\left | a \right |}\right ) + n \log \left ({\left | b \right |}\right )\right )} \cos \left (-\frac {1}{2} \, \pi m x \mathrm {sgn}\left (a\right ) - \frac {1}{2} \, \pi n x \mathrm {sgn}\left (b\right ) + \frac {1}{2} \, \pi m x + \frac {1}{2} \, \pi n x\right )}{{\left (\pi m \mathrm {sgn}\left (a\right ) + \pi n \mathrm {sgn}\left (b\right ) - \pi m - \pi n\right )}^{2} + 4 \, {\left (m \log \left ({\left | a \right |}\right ) + n \log \left ({\left | b \right |}\right )\right )}^{2}} - \frac {{\left (\pi m \mathrm {sgn}\left (a\right ) + \pi n \mathrm {sgn}\left (b\right ) - \pi m - \pi n\right )} \sin \left (-\frac {1}{2} \, \pi m x \mathrm {sgn}\left (a\right ) - \frac {1}{2} \, \pi n x \mathrm {sgn}\left (b\right ) + \frac {1}{2} \, \pi m x + \frac {1}{2} \, \pi n x\right )}{{\left (\pi m \mathrm {sgn}\left (a\right ) + \pi n \mathrm {sgn}\left (b\right ) - \pi m - \pi n\right )}^{2} + 4 \, {\left (m \log \left ({\left | a \right |}\right ) + n \log \left ({\left | b \right |}\right )\right )}^{2}}\right )} e^{\left ({\left (m \log \left ({\left | a \right |}\right ) + n \log \left ({\left | b \right |}\right )\right )} x\right )} + i \, {\left (\frac {i \, e^{\left (\frac {1}{2} i \, \pi m x \mathrm {sgn}\left (a\right ) + \frac {1}{2} i \, \pi n x \mathrm {sgn}\left (b\right ) - \frac {1}{2} i \, \pi m x - \frac {1}{2} i \, \pi n x\right )}}{i \, \pi m \mathrm {sgn}\left (a\right ) + i \, \pi n \mathrm {sgn}\left (b\right ) - i \, \pi m - i \, \pi n + 2 \, m \log \left ({\left | a \right |}\right ) + 2 \, n \log \left ({\left | b \right |}\right )} - \frac {i \, e^{\left (-\frac {1}{2} i \, \pi m x \mathrm {sgn}\left (a\right ) - \frac {1}{2} i \, \pi n x \mathrm {sgn}\left (b\right ) + \frac {1}{2} i \, \pi m x + \frac {1}{2} i \, \pi n x\right )}}{-i \, \pi m \mathrm {sgn}\left (a\right ) - i \, \pi n \mathrm {sgn}\left (b\right ) + i \, \pi m + i \, \pi n + 2 \, m \log \left ({\left | a \right |}\right ) + 2 \, n \log \left ({\left | b \right |}\right )}\right )} e^{\left ({\left (m \log \left ({\left | a \right |}\right ) + n \log \left ({\left | b \right |}\right )\right )} x\right )} \]
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Time = 0.41 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00 \[ \int a^{m x} b^{n x} \, dx=\frac {a^{m\,x}\,b^{n\,x}}{m\,\ln \left (a\right )+n\,\ln \left (b\right )} \]
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