Integrand size = 6, antiderivative size = 31 \[ \int a^x \cos (x) \, dx=\frac {a^x \cos (x) \log (a)}{1+\log ^2(a)}+\frac {a^x \sin (x)}{1+\log ^2(a)} \]
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Time = 0.01 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {4518} \[ \int a^x \cos (x) \, dx=\frac {a^x \sin (x)}{\log ^2(a)+1}+\frac {a^x \log (a) \cos (x)}{\log ^2(a)+1} \]
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Rule 4518
Rubi steps \begin{align*} \text {integral}& = \frac {a^x \cos (x) \log (a)}{1+\log ^2(a)}+\frac {a^x \sin (x)}{1+\log ^2(a)} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.65 \[ \int a^x \cos (x) \, dx=\frac {a^x (\cos (x) \log (a)+\sin (x))}{1+\log ^2(a)} \]
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Time = 0.16 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.68
method | result | size |
parallelrisch | \(\frac {a^{x} \left (\cos \left (x \right ) \ln \left (a \right )+\sin \left (x \right )\right )}{1+\ln \left (a \right )^{2}}\) | \(21\) |
risch | \(\frac {a^{x} \cos \left (x \right ) \ln \left (a \right )}{1+\ln \left (a \right )^{2}}+\frac {a^{x} \sin \left (x \right )}{1+\ln \left (a \right )^{2}}\) | \(32\) |
norman | \(\frac {\frac {\ln \left (a \right ) {\mathrm e}^{x \ln \left (a \right )}}{1+\ln \left (a \right )^{2}}+\frac {2 \,{\mathrm e}^{x \ln \left (a \right )} \tan \left (\frac {x}{2}\right )}{1+\ln \left (a \right )^{2}}-\frac {\ln \left (a \right ) {\mathrm e}^{x \ln \left (a \right )} \left (\tan ^{2}\left (\frac {x}{2}\right )\right )}{1+\ln \left (a \right )^{2}}}{1+\tan ^{2}\left (\frac {x}{2}\right )}\) | \(71\) |
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Time = 0.24 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.65 \[ \int a^x \cos (x) \, dx=\frac {{\left (\cos \left (x\right ) \log \left (a\right ) + \sin \left (x\right )\right )} a^{x}}{\log \left (a\right )^{2} + 1} \]
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Result contains complex when optimal does not.
Time = 0.27 (sec) , antiderivative size = 107, normalized size of antiderivative = 3.45 \[ \int a^x \cos (x) \, dx=\begin {cases} \frac {i x e^{- i x} \sin {\left (x \right )}}{2} + \frac {x e^{- i x} \cos {\left (x \right )}}{2} + \frac {i e^{- i x} \cos {\left (x \right )}}{2} & \text {for}\: a = e^{- i} \\- \frac {i x e^{i x} \sin {\left (x \right )}}{2} + \frac {x e^{i x} \cos {\left (x \right )}}{2} - \frac {i e^{i x} \cos {\left (x \right )}}{2} & \text {for}\: a = e^{i} \\\frac {a^{x} \log {\left (a \right )} \cos {\left (x \right )}}{\log {\left (a \right )}^{2} + 1} + \frac {a^{x} \sin {\left (x \right )}}{\log {\left (a \right )}^{2} + 1} & \text {otherwise} \end {cases} \]
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Time = 0.22 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.77 \[ \int a^x \cos (x) \, dx=\frac {a^{x} \cos \left (x\right ) \log \left (a\right ) + a^{x} \sin \left (x\right )}{\log \left (a\right )^{2} + 1} \]
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Result contains complex when optimal does not.
Time = 0.30 (sec) , antiderivative size = 329, normalized size of antiderivative = 10.61 \[ \int a^x \cos (x) \, dx={\left | a \right |}^{x} {\left (\frac {2 \, \cos \left (\frac {1}{2} \, \pi x \mathrm {sgn}\left (a\right ) - \frac {1}{2} \, \pi x + x\right ) \log \left ({\left | a \right |}\right )}{{\left (\pi - \pi \mathrm {sgn}\left (a\right ) - 2\right )}^{2} + 4 \, \log \left ({\left | a \right |}\right )^{2}} - \frac {{\left (\pi - \pi \mathrm {sgn}\left (a\right ) - 2\right )} \sin \left (\frac {1}{2} \, \pi x \mathrm {sgn}\left (a\right ) - \frac {1}{2} \, \pi x + x\right )}{{\left (\pi - \pi \mathrm {sgn}\left (a\right ) - 2\right )}^{2} + 4 \, \log \left ({\left | a \right |}\right )^{2}}\right )} + {\left | a \right |}^{x} {\left (\frac {2 \, \cos \left (\frac {1}{2} \, \pi x \mathrm {sgn}\left (a\right ) - \frac {1}{2} \, \pi x - x\right ) \log \left ({\left | a \right |}\right )}{{\left (\pi - \pi \mathrm {sgn}\left (a\right ) + 2\right )}^{2} + 4 \, \log \left ({\left | a \right |}\right )^{2}} - \frac {{\left (\pi - \pi \mathrm {sgn}\left (a\right ) + 2\right )} \sin \left (\frac {1}{2} \, \pi x \mathrm {sgn}\left (a\right ) - \frac {1}{2} \, \pi x - x\right )}{{\left (\pi - \pi \mathrm {sgn}\left (a\right ) + 2\right )}^{2} + 4 \, \log \left ({\left | a \right |}\right )^{2}}\right )} + i \, {\left | a \right |}^{x} {\left (\frac {i \, e^{\left (\frac {1}{2} i \, \pi x \mathrm {sgn}\left (a\right ) - \frac {1}{2} i \, \pi x + i \, x\right )}}{-2 i \, \pi + 2 i \, \pi \mathrm {sgn}\left (a\right ) + 4 \, \log \left ({\left | a \right |}\right ) + 4 i} - \frac {i \, e^{\left (-\frac {1}{2} i \, \pi x \mathrm {sgn}\left (a\right ) + \frac {1}{2} i \, \pi x - i \, x\right )}}{2 i \, \pi - 2 i \, \pi \mathrm {sgn}\left (a\right ) + 4 \, \log \left ({\left | a \right |}\right ) - 4 i}\right )} + i \, {\left | a \right |}^{x} {\left (\frac {i \, e^{\left (\frac {1}{2} i \, \pi x \mathrm {sgn}\left (a\right ) - \frac {1}{2} i \, \pi x - i \, x\right )}}{-2 i \, \pi + 2 i \, \pi \mathrm {sgn}\left (a\right ) + 4 \, \log \left ({\left | a \right |}\right ) - 4 i} - \frac {i \, e^{\left (-\frac {1}{2} i \, \pi x \mathrm {sgn}\left (a\right ) + \frac {1}{2} i \, \pi x + i \, x\right )}}{2 i \, \pi - 2 i \, \pi \mathrm {sgn}\left (a\right ) + 4 \, \log \left ({\left | a \right |}\right ) + 4 i}\right )} \]
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Time = 0.03 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.65 \[ \int a^x \cos (x) \, dx=\frac {a^x\,\left (\sin \left (x\right )+\ln \left (a\right )\,\cos \left (x\right )\right )}{{\ln \left (a\right )}^2+1} \]
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