Integrand size = 12, antiderivative size = 74 \[ \int x^2 \cot ^2(a+b x) \, dx=-\frac {i x^2}{b}-\frac {x^3}{3}-\frac {x^2 \cot (a+b x)}{b}+\frac {2 x \log \left (1-e^{2 i (a+b x)}\right )}{b^2}-\frac {i \operatorname {PolyLog}\left (2,e^{2 i (a+b x)}\right )}{b^3} \]
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Time = 0.15 (sec) , antiderivative size = 74, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.500, Rules used = {3801, 3798, 2221, 2317, 2438, 30} \[ \int x^2 \cot ^2(a+b x) \, dx=-\frac {i \operatorname {PolyLog}\left (2,e^{2 i (a+b x)}\right )}{b^3}+\frac {2 x \log \left (1-e^{2 i (a+b x)}\right )}{b^2}-\frac {x^2 \cot (a+b x)}{b}-\frac {i x^2}{b}-\frac {x^3}{3} \]
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Rule 30
Rule 2221
Rule 2317
Rule 2438
Rule 3798
Rule 3801
Rubi steps \begin{align*} \text {integral}& = -\frac {x^2 \cot (a+b x)}{b}+\frac {2 \int x \cot (a+b x) \, dx}{b}-\int x^2 \, dx \\ & = -\frac {i x^2}{b}-\frac {x^3}{3}-\frac {x^2 \cot (a+b x)}{b}-\frac {(4 i) \int \frac {e^{2 i (a+b x)} x}{1-e^{2 i (a+b x)}} \, dx}{b} \\ & = -\frac {i x^2}{b}-\frac {x^3}{3}-\frac {x^2 \cot (a+b x)}{b}+\frac {2 x \log \left (1-e^{2 i (a+b x)}\right )}{b^2}-\frac {2 \int \log \left (1-e^{2 i (a+b x)}\right ) \, dx}{b^2} \\ & = -\frac {i x^2}{b}-\frac {x^3}{3}-\frac {x^2 \cot (a+b x)}{b}+\frac {2 x \log \left (1-e^{2 i (a+b x)}\right )}{b^2}+\frac {i \text {Subst}\left (\int \frac {\log (1-x)}{x} \, dx,x,e^{2 i (a+b x)}\right )}{b^3} \\ & = -\frac {i x^2}{b}-\frac {x^3}{3}-\frac {x^2 \cot (a+b x)}{b}+\frac {2 x \log \left (1-e^{2 i (a+b x)}\right )}{b^2}-\frac {i \operatorname {PolyLog}\left (2,e^{2 i (a+b x)}\right )}{b^3} \\ \end{align*}
Both result and optimal contain complex but leaf count is larger than twice the leaf count of optimal. \(153\) vs. \(2(74)=148\).
Time = 5.80 (sec) , antiderivative size = 153, normalized size of antiderivative = 2.07 \[ \int x^2 \cot ^2(a+b x) \, dx=-\frac {x^3}{3}+\frac {i b x (\pi -2 \arctan (\tan (a)))+\pi \log \left (1+e^{-2 i b x}\right )+2 (b x+\arctan (\tan (a))) \log \left (1-e^{2 i (b x+\arctan (\tan (a)))}\right )-\pi \log (\cos (b x))-2 \arctan (\tan (a)) \log (\sin (b x+\arctan (\tan (a))))-i \operatorname {PolyLog}\left (2,e^{2 i (b x+\arctan (\tan (a)))}\right )-b^2 e^{i \arctan (\tan (a))} x^2 \cot (a) \sqrt {\sec ^2(a)}}{b^3}+\frac {x^2 \csc (a) \csc (a+b x) \sin (b x)}{b} \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 182 vs. \(2 (66 ) = 132\).
Time = 0.28 (sec) , antiderivative size = 183, normalized size of antiderivative = 2.47
method | result | size |
risch | \(-\frac {x^{3}}{3}-\frac {2 i x^{2}}{b \left ({\mathrm e}^{2 i \left (b x +a \right )}-1\right )}-\frac {2 i x^{2}}{b}-\frac {4 i a x}{b^{2}}-\frac {2 i a^{2}}{b^{3}}+\frac {2 \ln \left (1+{\mathrm e}^{i \left (b x +a \right )}\right ) x}{b^{2}}-\frac {2 i \operatorname {polylog}\left (2, -{\mathrm e}^{i \left (b x +a \right )}\right )}{b^{3}}+\frac {2 \ln \left (1-{\mathrm e}^{i \left (b x +a \right )}\right ) x}{b^{2}}+\frac {2 \ln \left (1-{\mathrm e}^{i \left (b x +a \right )}\right ) a}{b^{3}}-\frac {2 i \operatorname {polylog}\left (2, {\mathrm e}^{i \left (b x +a \right )}\right )}{b^{3}}+\frac {4 a \ln \left ({\mathrm e}^{i \left (b x +a \right )}\right )}{b^{3}}-\frac {2 a \ln \left ({\mathrm e}^{i \left (b x +a \right )}-1\right )}{b^{3}}\) | \(183\) |
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 281 vs. \(2 (63) = 126\).
Time = 0.28 (sec) , antiderivative size = 281, normalized size of antiderivative = 3.80 \[ \int x^2 \cot ^2(a+b x) \, dx=-\frac {2 \, b^{3} x^{3} \sin \left (2 \, b x + 2 \, a\right ) + 6 \, b^{2} x^{2} \cos \left (2 \, b x + 2 \, a\right ) + 6 \, b^{2} x^{2} + 6 \, a \log \left (-\frac {1}{2} \, \cos \left (2 \, b x + 2 \, a\right ) + \frac {1}{2} i \, \sin \left (2 \, b x + 2 \, a\right ) + \frac {1}{2}\right ) \sin \left (2 \, b x + 2 \, a\right ) + 6 \, a \log \left (-\frac {1}{2} \, \cos \left (2 \, b x + 2 \, a\right ) - \frac {1}{2} i \, \sin \left (2 \, b x + 2 \, a\right ) + \frac {1}{2}\right ) \sin \left (2 \, b x + 2 \, a\right ) - 6 \, {\left (b x + a\right )} \log \left (-\cos \left (2 \, b x + 2 \, a\right ) + i \, \sin \left (2 \, b x + 2 \, a\right ) + 1\right ) \sin \left (2 \, b x + 2 \, a\right ) - 6 \, {\left (b x + a\right )} \log \left (-\cos \left (2 \, b x + 2 \, a\right ) - i \, \sin \left (2 \, b x + 2 \, a\right ) + 1\right ) \sin \left (2 \, b x + 2 \, a\right ) + 3 i \, {\rm Li}_2\left (\cos \left (2 \, b x + 2 \, a\right ) + i \, \sin \left (2 \, b x + 2 \, a\right )\right ) \sin \left (2 \, b x + 2 \, a\right ) - 3 i \, {\rm Li}_2\left (\cos \left (2 \, b x + 2 \, a\right ) - i \, \sin \left (2 \, b x + 2 \, a\right )\right ) \sin \left (2 \, b x + 2 \, a\right )}{6 \, b^{3} \sin \left (2 \, b x + 2 \, a\right )} \]
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\[ \int x^2 \cot ^2(a+b x) \, dx=\int x^{2} \cot ^{2}{\left (a + b x \right )}\, dx \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 386 vs. \(2 (63) = 126\).
Time = 0.42 (sec) , antiderivative size = 386, normalized size of antiderivative = 5.22 \[ \int x^2 \cot ^2(a+b x) \, dx=\frac {-i \, b^{3} x^{3} + 6 \, {\left (b x \cos \left (2 \, b x + 2 \, a\right ) + i \, b x \sin \left (2 \, b x + 2 \, a\right ) - b x\right )} \arctan \left (\sin \left (b x + a\right ), \cos \left (b x + a\right ) + 1\right ) - 6 \, {\left (b x \cos \left (2 \, b x + 2 \, a\right ) + i \, b x \sin \left (2 \, b x + 2 \, a\right ) - b x\right )} \arctan \left (\sin \left (b x + a\right ), -\cos \left (b x + a\right ) + 1\right ) + {\left (i \, b^{3} x^{3} - 6 \, b^{2} x^{2}\right )} \cos \left (2 \, b x + 2 \, a\right ) - 6 \, {\left (\cos \left (2 \, b x + 2 \, a\right ) + i \, \sin \left (2 \, b x + 2 \, a\right ) - 1\right )} {\rm Li}_2\left (-e^{\left (i \, b x + i \, a\right )}\right ) - 6 \, {\left (\cos \left (2 \, b x + 2 \, a\right ) + i \, \sin \left (2 \, b x + 2 \, a\right ) - 1\right )} {\rm Li}_2\left (e^{\left (i \, b x + i \, a\right )}\right ) - 3 \, {\left (i \, b x \cos \left (2 \, b x + 2 \, a\right ) - b x \sin \left (2 \, b x + 2 \, a\right ) - i \, b x\right )} \log \left (\cos \left (b x + a\right )^{2} + \sin \left (b x + a\right )^{2} + 2 \, \cos \left (b x + a\right ) + 1\right ) - 3 \, {\left (i \, b x \cos \left (2 \, b x + 2 \, a\right ) - b x \sin \left (2 \, b x + 2 \, a\right ) - i \, b x\right )} \log \left (\cos \left (b x + a\right )^{2} + \sin \left (b x + a\right )^{2} - 2 \, \cos \left (b x + a\right ) + 1\right ) - {\left (b^{3} x^{3} + 6 i \, b^{2} x^{2}\right )} \sin \left (2 \, b x + 2 \, a\right )}{-3 i \, b^{3} \cos \left (2 \, b x + 2 \, a\right ) + 3 \, b^{3} \sin \left (2 \, b x + 2 \, a\right ) + 3 i \, b^{3}} \]
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\[ \int x^2 \cot ^2(a+b x) \, dx=\int { x^{2} \cot \left (b x + a\right )^{2} \,d x } \]
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Timed out. \[ \int x^2 \cot ^2(a+b x) \, dx=\int x^2\,{\mathrm {cot}\left (a+b\,x\right )}^2 \,d x \]
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