Integrand size = 14, antiderivative size = 21 \[ \int \frac {a+b \log (3+e x)}{x} \, dx=(a+b \log (3)) \log (x)-b \operatorname {PolyLog}\left (2,-\frac {e x}{3}\right ) \]
[Out]
Time = 0.02 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {2439, 2438} \[ \int \frac {a+b \log (3+e x)}{x} \, dx=\log (x) (a+b \log (3))-b \operatorname {PolyLog}\left (2,-\frac {e x}{3}\right ) \]
[In]
[Out]
Rule 2438
Rule 2439
Rubi steps \begin{align*} \text {integral}& = (a+b \log (3)) \log (x)+b \int \frac {\log \left (1+\frac {e x}{3}\right )}{x} \, dx \\ & = (a+b \log (3)) \log (x)-b \text {Li}_2\left (-\frac {e x}{3}\right ) \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.05 \[ \int \frac {a+b \log (3+e x)}{x} \, dx=a \log (x)+b \log (3) \log (x)-b \operatorname {PolyLog}\left (2,-\frac {e x}{3}\right ) \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. \(39\) vs. \(2(19)=38\).
Time = 0.21 (sec) , antiderivative size = 40, normalized size of antiderivative = 1.90
method | result | size |
parts | \(\ln \left (x \right ) a +b \left (\left (\ln \left (e x +3\right )-\ln \left (\frac {e x}{3}+1\right )\right ) \ln \left (-\frac {e x}{3}\right )-\operatorname {dilog}\left (\frac {e x}{3}+1\right )\right )\) | \(40\) |
derivativedivides | \(a \ln \left (e x \right )+b \left (\left (\ln \left (e x +3\right )-\ln \left (\frac {e x}{3}+1\right )\right ) \ln \left (-\frac {e x}{3}\right )-\operatorname {dilog}\left (\frac {e x}{3}+1\right )\right )\) | \(42\) |
default | \(a \ln \left (e x \right )+b \left (\left (\ln \left (e x +3\right )-\ln \left (\frac {e x}{3}+1\right )\right ) \ln \left (-\frac {e x}{3}\right )-\operatorname {dilog}\left (\frac {e x}{3}+1\right )\right )\) | \(42\) |
risch | \(\ln \left (x \right ) a +\ln \left (e x +3\right ) \ln \left (-\frac {e x}{3}\right ) b -\ln \left (\frac {e x}{3}+1\right ) \ln \left (-\frac {e x}{3}\right ) b -\operatorname {dilog}\left (\frac {e x}{3}+1\right ) b\) | \(44\) |
[In]
[Out]
\[ \int \frac {a+b \log (3+e x)}{x} \, dx=\int { \frac {b \log \left (e x + 3\right ) + a}{x} \,d x } \]
[In]
[Out]
Time = 1.99 (sec) , antiderivative size = 94, normalized size of antiderivative = 4.48 \[ \int \frac {a+b \log (3+e x)}{x} \, dx=a \log {\left (x \right )} + b \left (\begin {cases} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{3}\right ) & \text {for}\: \frac {1}{\left |{x}\right |} < 1 \wedge \left |{x}\right | < 1 \\\log {\left (3 \right )} \log {\left (x \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{3}\right ) & \text {for}\: \left |{x}\right | < 1 \\- \log {\left (3 \right )} \log {\left (\frac {1}{x} \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{3}\right ) & \text {for}\: \frac {1}{\left |{x}\right |} < 1 \\- {G_{2, 2}^{2, 0}\left (\begin {matrix} & 1, 1 \\0, 0 & \end {matrix} \middle | {x} \right )} \log {\left (3 \right )} + {G_{2, 2}^{0, 2}\left (\begin {matrix} 1, 1 & \\ & 0, 0 \end {matrix} \middle | {x} \right )} \log {\left (3 \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{3}\right ) & \text {otherwise} \end {cases}\right ) \]
[In]
[Out]
none
Time = 0.22 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.29 \[ \int \frac {a+b \log (3+e x)}{x} \, dx={\left (\log \left (e x + 3\right ) \log \left (-\frac {1}{3} \, e x\right ) + {\rm Li}_2\left (\frac {1}{3} \, e x + 1\right )\right )} b + a \log \left (x\right ) \]
[In]
[Out]
\[ \int \frac {a+b \log (3+e x)}{x} \, dx=\int { \frac {b \log \left (e x + 3\right ) + a}{x} \,d x } \]
[In]
[Out]
Time = 1.24 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.19 \[ \int \frac {a+b \log (3+e x)}{x} \, dx=b\,{\mathrm {Li}}_{\mathrm {2}}\left (-\frac {e\,x}{3}\right )+a\,\ln \left (x\right )+b\,\ln \left (e\,x+3\right )\,\ln \left (-\frac {e\,x}{3}\right ) \]
[In]
[Out]