Optimal. Leaf size=82 \[ \frac{x \left (a^2+2 b^2\right )}{2 a^3}+\frac{2 b^3 \tanh ^{-1}\left (\frac{a+b \tan \left (\frac{x}{2}\right )}{\sqrt{a^2-b^2}}\right )}{a^3 \sqrt{a^2-b^2}}+\frac{b \cos (x)}{a^2}-\frac{\sin (x) \cos (x)}{2 a} \]
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Rubi [A] time = 0.261108, antiderivative size = 82, normalized size of antiderivative = 1., number of steps used = 7, number of rules used = 7, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.538, Rules used = {3853, 4104, 3919, 3831, 2660, 618, 206} \[ \frac{x \left (a^2+2 b^2\right )}{2 a^3}+\frac{2 b^3 \tanh ^{-1}\left (\frac{a+b \tan \left (\frac{x}{2}\right )}{\sqrt{a^2-b^2}}\right )}{a^3 \sqrt{a^2-b^2}}+\frac{b \cos (x)}{a^2}-\frac{\sin (x) \cos (x)}{2 a} \]
Antiderivative was successfully verified.
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Rule 3853
Rule 4104
Rule 3919
Rule 3831
Rule 2660
Rule 618
Rule 206
Rubi steps
\begin{align*} \int \frac{\sin ^2(x)}{a+b \csc (x)} \, dx &=-\frac{\cos (x) \sin (x)}{2 a}+\frac{\int \frac{\left (-2 b+a \csc (x)+b \csc ^2(x)\right ) \sin (x)}{a+b \csc (x)} \, dx}{2 a}\\ &=\frac{b \cos (x)}{a^2}-\frac{\cos (x) \sin (x)}{2 a}-\frac{\int \frac{-a^2-2 b^2-a b \csc (x)}{a+b \csc (x)} \, dx}{2 a^2}\\ &=\frac{\left (a^2+2 b^2\right ) x}{2 a^3}+\frac{b \cos (x)}{a^2}-\frac{\cos (x) \sin (x)}{2 a}-\frac{b^3 \int \frac{\csc (x)}{a+b \csc (x)} \, dx}{a^3}\\ &=\frac{\left (a^2+2 b^2\right ) x}{2 a^3}+\frac{b \cos (x)}{a^2}-\frac{\cos (x) \sin (x)}{2 a}-\frac{b^2 \int \frac{1}{1+\frac{a \sin (x)}{b}} \, dx}{a^3}\\ &=\frac{\left (a^2+2 b^2\right ) x}{2 a^3}+\frac{b \cos (x)}{a^2}-\frac{\cos (x) \sin (x)}{2 a}-\frac{\left (2 b^2\right ) \operatorname{Subst}\left (\int \frac{1}{1+\frac{2 a x}{b}+x^2} \, dx,x,\tan \left (\frac{x}{2}\right )\right )}{a^3}\\ &=\frac{\left (a^2+2 b^2\right ) x}{2 a^3}+\frac{b \cos (x)}{a^2}-\frac{\cos (x) \sin (x)}{2 a}+\frac{\left (4 b^2\right ) \operatorname{Subst}\left (\int \frac{1}{-4 \left (1-\frac{a^2}{b^2}\right )-x^2} \, dx,x,\frac{2 a}{b}+2 \tan \left (\frac{x}{2}\right )\right )}{a^3}\\ &=\frac{\left (a^2+2 b^2\right ) x}{2 a^3}+\frac{2 b^3 \tanh ^{-1}\left (\frac{b \left (\frac{a}{b}+\tan \left (\frac{x}{2}\right )\right )}{\sqrt{a^2-b^2}}\right )}{a^3 \sqrt{a^2-b^2}}+\frac{b \cos (x)}{a^2}-\frac{\cos (x) \sin (x)}{2 a}\\ \end{align*}
Mathematica [A] time = 0.118575, size = 78, normalized size = 0.95 \[ \frac{-\frac{8 b^3 \tan ^{-1}\left (\frac{a+b \tan \left (\frac{x}{2}\right )}{\sqrt{b^2-a^2}}\right )}{\sqrt{b^2-a^2}}+2 a^2 x-a^2 \sin (2 x)+4 a b \cos (x)+4 b^2 x}{4 a^3} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.072, size = 142, normalized size = 1.7 \begin{align*}{\frac{1}{a} \left ( \tan \left ({\frac{x}{2}} \right ) \right ) ^{3} \left ( \left ( \tan \left ({\frac{x}{2}} \right ) \right ) ^{2}+1 \right ) ^{-2}}+2\,{\frac{b \left ( \tan \left ( x/2 \right ) \right ) ^{2}}{{a}^{2} \left ( \left ( \tan \left ( x/2 \right ) \right ) ^{2}+1 \right ) ^{2}}}-{\frac{1}{a}\tan \left ({\frac{x}{2}} \right ) \left ( \left ( \tan \left ({\frac{x}{2}} \right ) \right ) ^{2}+1 \right ) ^{-2}}+2\,{\frac{b}{{a}^{2} \left ( \left ( \tan \left ( x/2 \right ) \right ) ^{2}+1 \right ) ^{2}}}+2\,{\frac{\arctan \left ( \tan \left ( x/2 \right ) \right ){b}^{2}}{{a}^{3}}}-2\,{\frac{{b}^{3}}{{a}^{3}\sqrt{-{a}^{2}+{b}^{2}}}\arctan \left ( 1/2\,{\frac{2\,b\tan \left ( x/2 \right ) +2\,a}{\sqrt{-{a}^{2}+{b}^{2}}}} \right ) }+{\frac{x}{2\,a}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 0.540342, size = 644, normalized size = 7.85 \begin{align*} \left [\frac{\sqrt{a^{2} - b^{2}} b^{3} \log \left (\frac{{\left (a^{2} - 2 \, b^{2}\right )} \cos \left (x\right )^{2} + 2 \, a b \sin \left (x\right ) + a^{2} + b^{2} + 2 \,{\left (b \cos \left (x\right ) \sin \left (x\right ) + a \cos \left (x\right )\right )} \sqrt{a^{2} - b^{2}}}{a^{2} \cos \left (x\right )^{2} - 2 \, a b \sin \left (x\right ) - a^{2} - b^{2}}\right ) -{\left (a^{4} - a^{2} b^{2}\right )} \cos \left (x\right ) \sin \left (x\right ) +{\left (a^{4} + a^{2} b^{2} - 2 \, b^{4}\right )} x + 2 \,{\left (a^{3} b - a b^{3}\right )} \cos \left (x\right )}{2 \,{\left (a^{5} - a^{3} b^{2}\right )}}, \frac{2 \, \sqrt{-a^{2} + b^{2}} b^{3} \arctan \left (-\frac{\sqrt{-a^{2} + b^{2}}{\left (b \sin \left (x\right ) + a\right )}}{{\left (a^{2} - b^{2}\right )} \cos \left (x\right )}\right ) -{\left (a^{4} - a^{2} b^{2}\right )} \cos \left (x\right ) \sin \left (x\right ) +{\left (a^{4} + a^{2} b^{2} - 2 \, b^{4}\right )} x + 2 \,{\left (a^{3} b - a b^{3}\right )} \cos \left (x\right )}{2 \,{\left (a^{5} - a^{3} b^{2}\right )}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\sin ^{2}{\left (x \right )}}{a + b \csc{\left (x \right )}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.38052, size = 151, normalized size = 1.84 \begin{align*} -\frac{2 \,{\left (\pi \left \lfloor \frac{x}{2 \, \pi } + \frac{1}{2} \right \rfloor \mathrm{sgn}\left (b\right ) + \arctan \left (\frac{b \tan \left (\frac{1}{2} \, x\right ) + a}{\sqrt{-a^{2} + b^{2}}}\right )\right )} b^{3}}{\sqrt{-a^{2} + b^{2}} a^{3}} + \frac{{\left (a^{2} + 2 \, b^{2}\right )} x}{2 \, a^{3}} + \frac{a \tan \left (\frac{1}{2} \, x\right )^{3} + 2 \, b \tan \left (\frac{1}{2} \, x\right )^{2} - a \tan \left (\frac{1}{2} \, x\right ) + 2 \, b}{{\left (\tan \left (\frac{1}{2} \, x\right )^{2} + 1\right )}^{2} a^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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