Optimal. Leaf size=45 \[ x \log \left (a \sin ^2(x)\right )+i \text {Li}_2\left (e^{2 i x}\right )+i x^2-2 x \log \left (1-e^{2 i x}\right ) \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.06, antiderivative size = 45, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, integrand size = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.857, Rules used = {2548, 12, 3717, 2190, 2279, 2391} \[ i \text {PolyLog}\left (2,e^{2 i x}\right )+x \log \left (a \sin ^2(x)\right )+i x^2-2 x \log \left (1-e^{2 i x}\right ) \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 12
Rule 2190
Rule 2279
Rule 2391
Rule 2548
Rule 3717
Rubi steps
\begin {align*} \int \log \left (a \sin ^2(x)\right ) \, dx &=x \log \left (a \sin ^2(x)\right )-\int 2 x \cot (x) \, dx\\ &=x \log \left (a \sin ^2(x)\right )-2 \int x \cot (x) \, dx\\ &=i x^2+x \log \left (a \sin ^2(x)\right )+4 i \int \frac {e^{2 i x} x}{1-e^{2 i x}} \, dx\\ &=i x^2-2 x \log \left (1-e^{2 i x}\right )+x \log \left (a \sin ^2(x)\right )+2 \int \log \left (1-e^{2 i x}\right ) \, dx\\ &=i x^2-2 x \log \left (1-e^{2 i x}\right )+x \log \left (a \sin ^2(x)\right )-i \operatorname {Subst}\left (\int \frac {\log (1-x)}{x} \, dx,x,e^{2 i x}\right )\\ &=i x^2-2 x \log \left (1-e^{2 i x}\right )+x \log \left (a \sin ^2(x)\right )+i \text {Li}_2\left (e^{2 i x}\right )\\ \end {align*}
________________________________________________________________________________________
Mathematica [A] time = 0.02, size = 43, normalized size = 0.96 \[ x \left (\log \left (a \sin ^2(x)\right )+i x-2 \log \left (1-e^{2 i x}\right )\right )+i \text {Li}_2\left (e^{2 i x}\right ) \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
fricas [B] time = 0.90, size = 109, normalized size = 2.42 \[ x \log \left (-a \cos \relax (x)^{2} + a\right ) - x \log \left (\cos \relax (x) + i \, \sin \relax (x) + 1\right ) - x \log \left (\cos \relax (x) - i \, \sin \relax (x) + 1\right ) - x \log \left (-\cos \relax (x) + i \, \sin \relax (x) + 1\right ) - x \log \left (-\cos \relax (x) - i \, \sin \relax (x) + 1\right ) + i \, {\rm Li}_2\left (\cos \relax (x) + i \, \sin \relax (x)\right ) - i \, {\rm Li}_2\left (\cos \relax (x) - i \, \sin \relax (x)\right ) - i \, {\rm Li}_2\left (-\cos \relax (x) + i \, \sin \relax (x)\right ) + i \, {\rm Li}_2\left (-\cos \relax (x) - i \, \sin \relax (x)\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
giac [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \log \left (a \sin \relax (x)^{2}\right )\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maple [B] time = 0.45, size = 88, normalized size = 1.96 \[ -i \ln \left (-\left ({\mathrm e}^{2 i x}-1\right )^{2} a \,{\mathrm e}^{-2 i x}\right ) \ln \left ({\mathrm e}^{i x}\right )+2 i \ln \left ({\mathrm e}^{i x}+1\right ) \ln \left ({\mathrm e}^{i x}\right )-i \ln \left ({\mathrm e}^{i x}\right )^{2}+2 i \dilog \left ({\mathrm e}^{i x}+1\right )-2 i \dilog \left ({\mathrm e}^{i x}\right )+2 i \ln \relax (2) \ln \left ({\mathrm e}^{i x}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maxima [B] time = 2.32, size = 89, normalized size = 1.98 \[ i \, x^{2} - 2 i \, x \arctan \left (\sin \relax (x), \cos \relax (x) + 1\right ) + 2 i \, x \arctan \left (\sin \relax (x), -\cos \relax (x) + 1\right ) + x \log \left (a \sin \relax (x)^{2}\right ) - x \log \left (\cos \relax (x)^{2} + \sin \relax (x)^{2} + 2 \, \cos \relax (x) + 1\right ) - x \log \left (\cos \relax (x)^{2} + \sin \relax (x)^{2} - 2 \, \cos \relax (x) + 1\right ) + 2 i \, {\rm Li}_2\left (-e^{\left (i \, x\right )}\right ) + 2 i \, {\rm Li}_2\left (e^{\left (i \, x\right )}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
mupad [F] time = 0.00, size = -1, normalized size = -0.02 \[ \int \ln \left (a\,{\sin \relax (x)}^2\right ) \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \log {\left (a \sin ^{2}{\relax (x )} \right )}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________