Integrand size = 11, antiderivative size = 66 \[ \int \frac {\sin (x)}{a+b \cot (x)} \, dx=\frac {b^2 \text {arctanh}\left (\frac {(b-a \cot (x)) \sin (x)}{\sqrt {a^2+b^2}}\right )}{\left (a^2+b^2\right )^{3/2}}-\frac {a \cos (x)}{a^2+b^2}-\frac {b \sin (x)}{a^2+b^2} \]
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Time = 0.12 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.455, Rules used = {3592, 3567, 2718, 3590, 212} \[ \int \frac {\sin (x)}{a+b \cot (x)} \, dx=\frac {b^2 \text {arctanh}\left (\frac {\sin (x) (b-a \cot (x))}{\sqrt {a^2+b^2}}\right )}{\left (a^2+b^2\right )^{3/2}}-\frac {b \sin (x)}{a^2+b^2}-\frac {a \cos (x)}{a^2+b^2} \]
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Rule 212
Rule 2718
Rule 3567
Rule 3590
Rule 3592
Rubi steps \begin{align*} \text {integral}& = \frac {\int (a-b \cot (x)) \sin (x) \, dx}{a^2+b^2}+\frac {b^2 \int \frac {\csc (x)}{a+b \cot (x)} \, dx}{a^2+b^2} \\ & = -\frac {b \sin (x)}{a^2+b^2}+\frac {a \int \sin (x) \, dx}{a^2+b^2}-\frac {b^2 \text {Subst}\left (\int \frac {1}{a^2+b^2-x^2} \, dx,x,(-b+a \cot (x)) \sin (x)\right )}{a^2+b^2} \\ & = \frac {b^2 \text {arctanh}\left (\frac {(b-a \cot (x)) \sin (x)}{\sqrt {a^2+b^2}}\right )}{\left (a^2+b^2\right )^{3/2}}-\frac {a \cos (x)}{a^2+b^2}-\frac {b \sin (x)}{a^2+b^2} \\ \end{align*}
Time = 0.37 (sec) , antiderivative size = 62, normalized size of antiderivative = 0.94 \[ \int \frac {\sin (x)}{a+b \cot (x)} \, dx=\frac {2 b^2 \text {arctanh}\left (\frac {-a+b \tan \left (\frac {x}{2}\right )}{\sqrt {a^2+b^2}}\right )}{\left (a^2+b^2\right )^{3/2}}-\frac {a \cos (x)+b \sin (x)}{a^2+b^2} \]
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Time = 0.27 (sec) , antiderivative size = 84, normalized size of antiderivative = 1.27
method | result | size |
default | \(\frac {-2 b \tan \left (\frac {x}{2}\right )-2 a}{\left (a^{2}+b^{2}\right ) \left (1+\tan \left (\frac {x}{2}\right )^{2}\right )}-\frac {8 b^{2} \operatorname {arctanh}\left (\frac {-2 b \tan \left (\frac {x}{2}\right )+2 a}{2 \sqrt {a^{2}+b^{2}}}\right )}{\left (4 a^{2}+4 b^{2}\right ) \sqrt {a^{2}+b^{2}}}\) | \(84\) |
risch | \(-\frac {{\mathrm e}^{i x}}{2 \left (i b +a \right )}-\frac {{\mathrm e}^{-i x}}{2 \left (-i b +a \right )}+\frac {i b^{2} \ln \left ({\mathrm e}^{i x}-\frac {i a +b}{\sqrt {-a^{2}-b^{2}}}\right )}{\sqrt {-a^{2}-b^{2}}\, \left (a^{2}+b^{2}\right )}-\frac {i b^{2} \ln \left ({\mathrm e}^{i x}+\frac {i a +b}{\sqrt {-a^{2}-b^{2}}}\right )}{\sqrt {-a^{2}-b^{2}}\, \left (a^{2}+b^{2}\right )}\) | \(143\) |
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Leaf count of result is larger than twice the leaf count of optimal. 146 vs. \(2 (64) = 128\).
Time = 0.30 (sec) , antiderivative size = 146, normalized size of antiderivative = 2.21 \[ \int \frac {\sin (x)}{a+b \cot (x)} \, dx=\frac {\sqrt {a^{2} + b^{2}} b^{2} \log \left (-\frac {2 \, a b \cos \left (x\right ) \sin \left (x\right ) - {\left (a^{2} - b^{2}\right )} \cos \left (x\right )^{2} - a^{2} - 2 \, b^{2} + 2 \, \sqrt {a^{2} + b^{2}} {\left (a \cos \left (x\right ) - b \sin \left (x\right )\right )}}{2 \, a b \cos \left (x\right ) \sin \left (x\right ) - {\left (a^{2} - b^{2}\right )} \cos \left (x\right )^{2} + a^{2}}\right ) - 2 \, {\left (a^{3} + a b^{2}\right )} \cos \left (x\right ) - 2 \, {\left (a^{2} b + b^{3}\right )} \sin \left (x\right )}{2 \, {\left (a^{4} + 2 \, a^{2} b^{2} + b^{4}\right )}} \]
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\[ \int \frac {\sin (x)}{a+b \cot (x)} \, dx=\int \frac {\sin {\left (x \right )}}{a + b \cot {\left (x \right )}}\, dx \]
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none
Time = 0.37 (sec) , antiderivative size = 106, normalized size of antiderivative = 1.61 \[ \int \frac {\sin (x)}{a+b \cot (x)} \, dx=-\frac {b^{2} \log \left (\frac {a - \frac {b \sin \left (x\right )}{\cos \left (x\right ) + 1} + \sqrt {a^{2} + b^{2}}}{a - \frac {b \sin \left (x\right )}{\cos \left (x\right ) + 1} - \sqrt {a^{2} + b^{2}}}\right )}{{\left (a^{2} + b^{2}\right )}^{\frac {3}{2}}} - \frac {2 \, {\left (a + \frac {b \sin \left (x\right )}{\cos \left (x\right ) + 1}\right )}}{a^{2} + b^{2} + \frac {{\left (a^{2} + b^{2}\right )} \sin \left (x\right )^{2}}{{\left (\cos \left (x\right ) + 1\right )}^{2}}} \]
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Time = 0.27 (sec) , antiderivative size = 94, normalized size of antiderivative = 1.42 \[ \int \frac {\sin (x)}{a+b \cot (x)} \, dx=-\frac {b^{2} \log \left (\frac {{\left | 2 \, b \tan \left (\frac {1}{2} \, x\right ) - 2 \, a - 2 \, \sqrt {a^{2} + b^{2}} \right |}}{{\left | 2 \, b \tan \left (\frac {1}{2} \, x\right ) - 2 \, a + 2 \, \sqrt {a^{2} + b^{2}} \right |}}\right )}{{\left (a^{2} + b^{2}\right )}^{\frac {3}{2}}} - \frac {2 \, {\left (b \tan \left (\frac {1}{2} \, x\right ) + a\right )}}{{\left (a^{2} + b^{2}\right )} {\left (\tan \left (\frac {1}{2} \, x\right )^{2} + 1\right )}} \]
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Time = 12.59 (sec) , antiderivative size = 94, normalized size of antiderivative = 1.42 \[ \int \frac {\sin (x)}{a+b \cot (x)} \, dx=-\frac {\frac {2\,a}{a^2+b^2}+\frac {2\,b\,\mathrm {tan}\left (\frac {x}{2}\right )}{a^2+b^2}}{{\mathrm {tan}\left (\frac {x}{2}\right )}^2+1}-\frac {2\,b^2\,\mathrm {atanh}\left (\frac {2\,a\,b^2+2\,a^3-2\,b\,\mathrm {tan}\left (\frac {x}{2}\right )\,\left (a^2+b^2\right )}{2\,{\left (a^2+b^2\right )}^{3/2}}\right )}{{\left (a^2+b^2\right )}^{3/2}} \]
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