Integrand size = 17, antiderivative size = 59 \[ \int \frac {\cot ^3(x)}{\left (a+b \cot ^2(x)\right )^{3/2}} \, dx=-\frac {\text {arctanh}\left (\frac {\sqrt {a+b \cot ^2(x)}}{\sqrt {a-b}}\right )}{(a-b)^{3/2}}+\frac {a}{(a-b) b \sqrt {a+b \cot ^2(x)}} \]
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Time = 0.15 (sec) , antiderivative size = 59, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.294, Rules used = {3751, 457, 79, 65, 214} \[ \int \frac {\cot ^3(x)}{\left (a+b \cot ^2(x)\right )^{3/2}} \, dx=\frac {a}{b (a-b) \sqrt {a+b \cot ^2(x)}}-\frac {\text {arctanh}\left (\frac {\sqrt {a+b \cot ^2(x)}}{\sqrt {a-b}}\right )}{(a-b)^{3/2}} \]
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Rule 65
Rule 79
Rule 214
Rule 457
Rule 3751
Rubi steps \begin{align*} \text {integral}& = -\text {Subst}\left (\int \frac {x^3}{\left (1+x^2\right ) \left (a+b x^2\right )^{3/2}} \, dx,x,\cot (x)\right ) \\ & = -\left (\frac {1}{2} \text {Subst}\left (\int \frac {x}{(1+x) (a+b x)^{3/2}} \, dx,x,\cot ^2(x)\right )\right ) \\ & = \frac {a}{(a-b) b \sqrt {a+b \cot ^2(x)}}+\frac {\text {Subst}\left (\int \frac {1}{(1+x) \sqrt {a+b x}} \, dx,x,\cot ^2(x)\right )}{2 (a-b)} \\ & = \frac {a}{(a-b) b \sqrt {a+b \cot ^2(x)}}+\frac {\text {Subst}\left (\int \frac {1}{1-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+b \cot ^2(x)}\right )}{(a-b) b} \\ & = -\frac {\text {arctanh}\left (\frac {\sqrt {a+b \cot ^2(x)}}{\sqrt {a-b}}\right )}{(a-b)^{3/2}}+\frac {a}{(a-b) b \sqrt {a+b \cot ^2(x)}} \\ \end{align*}
Time = 0.26 (sec) , antiderivative size = 59, normalized size of antiderivative = 1.00 \[ \int \frac {\cot ^3(x)}{\left (a+b \cot ^2(x)\right )^{3/2}} \, dx=-\frac {\text {arctanh}\left (\frac {\sqrt {a+b \cot ^2(x)}}{\sqrt {a-b}}\right )}{(a-b)^{3/2}}+\frac {a}{(a-b) b \sqrt {a+b \cot ^2(x)}} \]
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Time = 0.06 (sec) , antiderivative size = 68, normalized size of antiderivative = 1.15
method | result | size |
derivativedivides | \(\frac {1}{b \sqrt {a +b \cot \left (x \right )^{2}}}+\frac {1}{\left (a -b \right ) \sqrt {a +b \cot \left (x \right )^{2}}}+\frac {\arctan \left (\frac {\sqrt {a +b \cot \left (x \right )^{2}}}{\sqrt {-a +b}}\right )}{\left (a -b \right ) \sqrt {-a +b}}\) | \(68\) |
default | \(\frac {1}{b \sqrt {a +b \cot \left (x \right )^{2}}}+\frac {1}{\left (a -b \right ) \sqrt {a +b \cot \left (x \right )^{2}}}+\frac {\arctan \left (\frac {\sqrt {a +b \cot \left (x \right )^{2}}}{\sqrt {-a +b}}\right )}{\left (a -b \right ) \sqrt {-a +b}}\) | \(68\) |
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Leaf count of result is larger than twice the leaf count of optimal. 186 vs. \(2 (51) = 102\).
Time = 0.31 (sec) , antiderivative size = 385, normalized size of antiderivative = 6.53 \[ \int \frac {\cot ^3(x)}{\left (a+b \cot ^2(x)\right )^{3/2}} \, dx=\left [-\frac {{\left (a b + b^{2} - {\left (a b - b^{2}\right )} \cos \left (2 \, x\right )\right )} \sqrt {a - b} \log \left (-\sqrt {a - b} \sqrt {\frac {{\left (a - b\right )} \cos \left (2 \, x\right ) - a - b}{\cos \left (2 \, x\right ) - 1}} {\left (\cos \left (2 \, x\right ) - 1\right )} - {\left (a - b\right )} \cos \left (2 \, x\right ) + a\right ) - 2 \, {\left (a^{2} - a b - {\left (a^{2} - a b\right )} \cos \left (2 \, x\right )\right )} \sqrt {\frac {{\left (a - b\right )} \cos \left (2 \, x\right ) - a - b}{\cos \left (2 \, x\right ) - 1}}}{2 \, {\left (a^{3} b - a^{2} b^{2} - a b^{3} + b^{4} - {\left (a^{3} b - 3 \, a^{2} b^{2} + 3 \, a b^{3} - b^{4}\right )} \cos \left (2 \, x\right )\right )}}, -\frac {{\left (a b + b^{2} - {\left (a b - b^{2}\right )} \cos \left (2 \, x\right )\right )} \sqrt {-a + b} \arctan \left (-\frac {\sqrt {-a + b} \sqrt {\frac {{\left (a - b\right )} \cos \left (2 \, x\right ) - a - b}{\cos \left (2 \, x\right ) - 1}}}{a - b}\right ) - {\left (a^{2} - a b - {\left (a^{2} - a b\right )} \cos \left (2 \, x\right )\right )} \sqrt {\frac {{\left (a - b\right )} \cos \left (2 \, x\right ) - a - b}{\cos \left (2 \, x\right ) - 1}}}{a^{3} b - a^{2} b^{2} - a b^{3} + b^{4} - {\left (a^{3} b - 3 \, a^{2} b^{2} + 3 \, a b^{3} - b^{4}\right )} \cos \left (2 \, x\right )}\right ] \]
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\[ \int \frac {\cot ^3(x)}{\left (a+b \cot ^2(x)\right )^{3/2}} \, dx=\int \frac {\cot ^{3}{\left (x \right )}}{\left (a + b \cot ^{2}{\left (x \right )}\right )^{\frac {3}{2}}}\, dx \]
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Exception generated. \[ \int \frac {\cot ^3(x)}{\left (a+b \cot ^2(x)\right )^{3/2}} \, dx=\text {Exception raised: ValueError} \]
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Leaf count of result is larger than twice the leaf count of optimal. 109 vs. \(2 (51) = 102\).
Time = 0.32 (sec) , antiderivative size = 109, normalized size of antiderivative = 1.85 \[ \int \frac {\cot ^3(x)}{\left (a+b \cot ^2(x)\right )^{3/2}} \, dx=-\frac {\log \left ({\left | b \right |}\right ) \mathrm {sgn}\left (\sin \left (x\right )\right )}{2 \, {\left (\sqrt {a - b} a - \sqrt {a - b} b\right )}} + \frac {\frac {a \sin \left (x\right )}{\sqrt {a \sin \left (x\right )^{2} - b \sin \left (x\right )^{2} + b} {\left (a b - b^{2}\right )}} + \frac {\log \left ({\left | -\sqrt {a - b} \sin \left (x\right ) + \sqrt {a \sin \left (x\right )^{2} - b \sin \left (x\right )^{2} + b} \right |}\right )}{{\left (a - b\right )}^{\frac {3}{2}}}}{\mathrm {sgn}\left (\sin \left (x\right )\right )} \]
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Time = 14.40 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.88 \[ \int \frac {\cot ^3(x)}{\left (a+b \cot ^2(x)\right )^{3/2}} \, dx=\frac {a}{\left (a\,b-b^2\right )\,\sqrt {b\,{\mathrm {cot}\left (x\right )}^2+a}}-\frac {\mathrm {atanh}\left (\frac {\sqrt {b\,{\mathrm {cot}\left (x\right )}^2+a}}{\sqrt {a-b}}\right )}{{\left (a-b\right )}^{3/2}} \]
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