Integrand size = 14, antiderivative size = 60 \[ \int \frac {\sin (x)}{(a \cos (x)+b \sin (x))^2} \, dx=-\frac {b \text {arctanh}\left (\frac {b \cos (x)-a \sin (x)}{\sqrt {a^2+b^2}}\right )}{\left (a^2+b^2\right )^{3/2}}+\frac {a}{\left (a^2+b^2\right ) (a \cos (x)+b \sin (x))} \]
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Time = 0.05 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.214, Rules used = {3233, 3153, 212} \[ \int \frac {\sin (x)}{(a \cos (x)+b \sin (x))^2} \, dx=\frac {a}{\left (a^2+b^2\right ) (a \cos (x)+b \sin (x))}-\frac {b \text {arctanh}\left (\frac {b \cos (x)-a \sin (x)}{\sqrt {a^2+b^2}}\right )}{\left (a^2+b^2\right )^{3/2}} \]
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Rule 212
Rule 3153
Rule 3233
Rubi steps \begin{align*} \text {integral}& = \frac {a}{\left (a^2+b^2\right ) (a \cos (x)+b \sin (x))}+\frac {b \int \frac {1}{a \cos (x)+b \sin (x)} \, dx}{a^2+b^2} \\ & = \frac {a}{\left (a^2+b^2\right ) (a \cos (x)+b \sin (x))}-\frac {b \text {Subst}\left (\int \frac {1}{a^2+b^2-x^2} \, dx,x,b \cos (x)-a \sin (x)\right )}{a^2+b^2} \\ & = -\frac {b \text {arctanh}\left (\frac {b \cos (x)-a \sin (x)}{\sqrt {a^2+b^2}}\right )}{\left (a^2+b^2\right )^{3/2}}+\frac {a}{\left (a^2+b^2\right ) (a \cos (x)+b \sin (x))} \\ \end{align*}
Time = 0.26 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.03 \[ \int \frac {\sin (x)}{(a \cos (x)+b \sin (x))^2} \, dx=\frac {2 b \text {arctanh}\left (\frac {-b+a \tan \left (\frac {x}{2}\right )}{\sqrt {a^2+b^2}}\right )}{\left (a^2+b^2\right )^{3/2}}+\frac {a}{\left (a^2+b^2\right ) (a \cos (x)+b \sin (x))} \]
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Time = 0.39 (sec) , antiderivative size = 97, normalized size of antiderivative = 1.62
method | result | size |
default | \(\frac {8 b \tan \left (\frac {x}{2}\right )+8 a}{\left (-4 a^{2}-4 b^{2}\right ) \left (\tan \left (\frac {x}{2}\right )^{2} a -2 b \tan \left (\frac {x}{2}\right )-a \right )}-\frac {8 b \,\operatorname {arctanh}\left (\frac {2 a \tan \left (\frac {x}{2}\right )-2 b}{2 \sqrt {a^{2}+b^{2}}}\right )}{\left (-4 a^{2}-4 b^{2}\right ) \sqrt {a^{2}+b^{2}}}\) | \(97\) |
risch | \(\frac {2 a \,{\mathrm e}^{i x}}{\left (i b +a \right ) \left (-i b +a \right ) \left (-i b \,{\mathrm e}^{2 i x}+a \,{\mathrm e}^{2 i x}+i b +a \right )}+\frac {i b \ln \left ({\mathrm e}^{i x}-\frac {i b +a}{\sqrt {-a^{2}-b^{2}}}\right )}{\sqrt {-a^{2}-b^{2}}\, \left (a^{2}+b^{2}\right )}-\frac {i b \ln \left ({\mathrm e}^{i x}+\frac {i b +a}{\sqrt {-a^{2}-b^{2}}}\right )}{\sqrt {-a^{2}-b^{2}}\, \left (a^{2}+b^{2}\right )}\) | \(157\) |
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Leaf count of result is larger than twice the leaf count of optimal. 164 vs. \(2 (56) = 112\).
Time = 0.26 (sec) , antiderivative size = 164, normalized size of antiderivative = 2.73 \[ \int \frac {\sin (x)}{(a \cos (x)+b \sin (x))^2} \, dx=\frac {2 \, a^{3} + 2 \, a b^{2} + {\left (a b \cos \left (x\right ) + b^{2} \sin \left (x\right )\right )} \sqrt {a^{2} + b^{2}} \log \left (-\frac {2 \, a b \cos \left (x\right ) \sin \left (x\right ) + {\left (a^{2} - b^{2}\right )} \cos \left (x\right )^{2} - 2 \, a^{2} - b^{2} + 2 \, \sqrt {a^{2} + b^{2}} {\left (b \cos \left (x\right ) - a \sin \left (x\right )\right )}}{2 \, a b \cos \left (x\right ) \sin \left (x\right ) + {\left (a^{2} - b^{2}\right )} \cos \left (x\right )^{2} + b^{2}}\right )}{2 \, {\left ({\left (a^{5} + 2 \, a^{3} b^{2} + a b^{4}\right )} \cos \left (x\right ) + {\left (a^{4} b + 2 \, a^{2} b^{3} + b^{5}\right )} \sin \left (x\right )\right )}} \]
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Exception generated. \[ \int \frac {\sin (x)}{(a \cos (x)+b \sin (x))^2} \, dx=\text {Exception raised: AttributeError} \]
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Leaf count of result is larger than twice the leaf count of optimal. 128 vs. \(2 (56) = 112\).
Time = 0.31 (sec) , antiderivative size = 128, normalized size of antiderivative = 2.13 \[ \int \frac {\sin (x)}{(a \cos (x)+b \sin (x))^2} \, dx=-\frac {b \log \left (\frac {b - \frac {a \sin \left (x\right )}{\cos \left (x\right ) + 1} + \sqrt {a^{2} + b^{2}}}{b - \frac {a \sin \left (x\right )}{\cos \left (x\right ) + 1} - \sqrt {a^{2} + b^{2}}}\right )}{{\left (a^{2} + b^{2}\right )}^{\frac {3}{2}}} + \frac {2 \, {\left (a + \frac {b \sin \left (x\right )}{\cos \left (x\right ) + 1}\right )}}{a^{3} + a b^{2} + \frac {2 \, {\left (a^{2} b + b^{3}\right )} \sin \left (x\right )}{\cos \left (x\right ) + 1} - \frac {{\left (a^{3} + a b^{2}\right )} \sin \left (x\right )^{2}}{{\left (\cos \left (x\right ) + 1\right )}^{2}}} \]
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Time = 0.30 (sec) , antiderivative size = 103, normalized size of antiderivative = 1.72 \[ \int \frac {\sin (x)}{(a \cos (x)+b \sin (x))^2} \, dx=-\frac {b \log \left (\frac {{\left | 2 \, a \tan \left (\frac {1}{2} \, x\right ) - 2 \, b - 2 \, \sqrt {a^{2} + b^{2}} \right |}}{{\left | 2 \, a \tan \left (\frac {1}{2} \, x\right ) - 2 \, b + 2 \, \sqrt {a^{2} + b^{2}} \right |}}\right )}{{\left (a^{2} + b^{2}\right )}^{\frac {3}{2}}} - \frac {2 \, {\left (b \tan \left (\frac {1}{2} \, x\right ) + a\right )}}{{\left (a \tan \left (\frac {1}{2} \, x\right )^{2} - 2 \, b \tan \left (\frac {1}{2} \, x\right ) - a\right )} {\left (a^{2} + b^{2}\right )}} \]
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Time = 21.69 (sec) , antiderivative size = 86, normalized size of antiderivative = 1.43 \[ \int \frac {\sin (x)}{(a \cos (x)+b \sin (x))^2} \, dx=\frac {\frac {2\,a}{a^2+b^2}+\frac {2\,b\,\mathrm {tan}\left (\frac {x}{2}\right )}{a^2+b^2}}{-a\,{\mathrm {tan}\left (\frac {x}{2}\right )}^2+2\,b\,\mathrm {tan}\left (\frac {x}{2}\right )+a}-\frac {2\,b\,\mathrm {atanh}\left (\frac {2\,b-2\,a\,\mathrm {tan}\left (\frac {x}{2}\right )}{2\,\sqrt {a^2+b^2}}\right )}{{\left (a^2+b^2\right )}^{3/2}} \]
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