Optimal. Leaf size=189 \[ \frac{b^2 \left (2 a^2+3 b^2\right )}{a^3 d \left (a^2+b^2\right ) (a+b \tan (c+d x))}-\frac{\left (a^2-3 b^2\right ) \log (\sin (c+d x))}{a^4 d}-\frac{b^4 \left (5 a^2+3 b^2\right ) \log (a \cos (c+d x)+b \sin (c+d x))}{a^4 d \left (a^2+b^2\right )^2}+\frac{2 a b x}{\left (a^2+b^2\right )^2}+\frac{3 b \cot (c+d x)}{2 a^2 d (a+b \tan (c+d x))}-\frac{\cot ^2(c+d x)}{2 a d (a+b \tan (c+d x))} \]
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Rubi [A] time = 0.57283, antiderivative size = 189, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 6, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.286, Rules used = {3569, 3649, 3650, 3651, 3530, 3475} \[ \frac{b^2 \left (2 a^2+3 b^2\right )}{a^3 d \left (a^2+b^2\right ) (a+b \tan (c+d x))}-\frac{\left (a^2-3 b^2\right ) \log (\sin (c+d x))}{a^4 d}-\frac{b^4 \left (5 a^2+3 b^2\right ) \log (a \cos (c+d x)+b \sin (c+d x))}{a^4 d \left (a^2+b^2\right )^2}+\frac{2 a b x}{\left (a^2+b^2\right )^2}+\frac{3 b \cot (c+d x)}{2 a^2 d (a+b \tan (c+d x))}-\frac{\cot ^2(c+d x)}{2 a d (a+b \tan (c+d x))} \]
Antiderivative was successfully verified.
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Rule 3569
Rule 3649
Rule 3650
Rule 3651
Rule 3530
Rule 3475
Rubi steps
\begin{align*} \int \frac{\cot ^3(c+d x)}{(a+b \tan (c+d x))^2} \, dx &=-\frac{\cot ^2(c+d x)}{2 a d (a+b \tan (c+d x))}-\frac{\int \frac{\cot ^2(c+d x) \left (3 b+2 a \tan (c+d x)+3 b \tan ^2(c+d x)\right )}{(a+b \tan (c+d x))^2} \, dx}{2 a}\\ &=\frac{3 b \cot (c+d x)}{2 a^2 d (a+b \tan (c+d x))}-\frac{\cot ^2(c+d x)}{2 a d (a+b \tan (c+d x))}+\frac{\int \frac{\cot (c+d x) \left (-2 \left (a^2-3 b^2\right )+6 b^2 \tan ^2(c+d x)\right )}{(a+b \tan (c+d x))^2} \, dx}{2 a^2}\\ &=\frac{b^2 \left (2 a^2+3 b^2\right )}{a^3 \left (a^2+b^2\right ) d (a+b \tan (c+d x))}+\frac{3 b \cot (c+d x)}{2 a^2 d (a+b \tan (c+d x))}-\frac{\cot ^2(c+d x)}{2 a d (a+b \tan (c+d x))}+\frac{\int \frac{\cot (c+d x) \left (-2 \left (a^2-3 b^2\right ) \left (a^2+b^2\right )+2 a^3 b \tan (c+d x)+2 b^2 \left (2 a^2+3 b^2\right ) \tan ^2(c+d x)\right )}{a+b \tan (c+d x)} \, dx}{2 a^3 \left (a^2+b^2\right )}\\ &=\frac{2 a b x}{\left (a^2+b^2\right )^2}+\frac{b^2 \left (2 a^2+3 b^2\right )}{a^3 \left (a^2+b^2\right ) d (a+b \tan (c+d x))}+\frac{3 b \cot (c+d x)}{2 a^2 d (a+b \tan (c+d x))}-\frac{\cot ^2(c+d x)}{2 a d (a+b \tan (c+d x))}-\frac{\left (a^2-3 b^2\right ) \int \cot (c+d x) \, dx}{a^4}-\frac{\left (b^4 \left (5 a^2+3 b^2\right )\right ) \int \frac{b-a \tan (c+d x)}{a+b \tan (c+d x)} \, dx}{a^4 \left (a^2+b^2\right )^2}\\ &=\frac{2 a b x}{\left (a^2+b^2\right )^2}-\frac{\left (a^2-3 b^2\right ) \log (\sin (c+d x))}{a^4 d}-\frac{b^4 \left (5 a^2+3 b^2\right ) \log (a \cos (c+d x)+b \sin (c+d x))}{a^4 \left (a^2+b^2\right )^2 d}+\frac{b^2 \left (2 a^2+3 b^2\right )}{a^3 \left (a^2+b^2\right ) d (a+b \tan (c+d x))}+\frac{3 b \cot (c+d x)}{2 a^2 d (a+b \tan (c+d x))}-\frac{\cot ^2(c+d x)}{2 a d (a+b \tan (c+d x))}\\ \end{align*}
Mathematica [C] time = 1.17794, size = 146, normalized size = 0.77 \[ -\frac{\frac{2 b^5}{a^4 \left (a^2+b^2\right ) (a \cot (c+d x)+b)}+\frac{2 b^4 \left (5 a^2+3 b^2\right ) \log (a \cot (c+d x)+b)}{a^4 \left (a^2+b^2\right )^2}-\frac{4 b \cot (c+d x)}{a^3}+\frac{\cot ^2(c+d x)}{a^2}-\frac{\log (-\cot (c+d x)+i)}{(a-i b)^2}-\frac{\log (\cot (c+d x)+i)}{(a+i b)^2}}{2 d} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.09, size = 240, normalized size = 1.3 \begin{align*}{\frac{\ln \left ( 1+ \left ( \tan \left ( dx+c \right ) \right ) ^{2} \right ){a}^{2}}{2\,d \left ({a}^{2}+{b}^{2} \right ) ^{2}}}-{\frac{\ln \left ( 1+ \left ( \tan \left ( dx+c \right ) \right ) ^{2} \right ){b}^{2}}{2\,d \left ({a}^{2}+{b}^{2} \right ) ^{2}}}+2\,{\frac{ab\arctan \left ( \tan \left ( dx+c \right ) \right ) }{d \left ({a}^{2}+{b}^{2} \right ) ^{2}}}-{\frac{1}{2\,{a}^{2}d \left ( \tan \left ( dx+c \right ) \right ) ^{2}}}-{\frac{\ln \left ( \tan \left ( dx+c \right ) \right ) }{{a}^{2}d}}+3\,{\frac{\ln \left ( \tan \left ( dx+c \right ) \right ){b}^{2}}{d{a}^{4}}}+2\,{\frac{b}{d{a}^{3}\tan \left ( dx+c \right ) }}+{\frac{{b}^{4}}{d \left ({a}^{2}+{b}^{2} \right ){a}^{3} \left ( a+b\tan \left ( dx+c \right ) \right ) }}-5\,{\frac{{b}^{4}\ln \left ( a+b\tan \left ( dx+c \right ) \right ) }{d \left ({a}^{2}+{b}^{2} \right ) ^{2}{a}^{2}}}-3\,{\frac{{b}^{6}\ln \left ( a+b\tan \left ( dx+c \right ) \right ) }{d \left ({a}^{2}+{b}^{2} \right ) ^{2}{a}^{4}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.59519, size = 324, normalized size = 1.71 \begin{align*} \frac{\frac{4 \,{\left (d x + c\right )} a b}{a^{4} + 2 \, a^{2} b^{2} + b^{4}} - \frac{2 \,{\left (5 \, a^{2} b^{4} + 3 \, b^{6}\right )} \log \left (b \tan \left (d x + c\right ) + a\right )}{a^{8} + 2 \, a^{6} b^{2} + a^{4} b^{4}} + \frac{{\left (a^{2} - b^{2}\right )} \log \left (\tan \left (d x + c\right )^{2} + 1\right )}{a^{4} + 2 \, a^{2} b^{2} + b^{4}} - \frac{a^{4} + a^{2} b^{2} - 2 \,{\left (2 \, a^{2} b^{2} + 3 \, b^{4}\right )} \tan \left (d x + c\right )^{2} - 3 \,{\left (a^{3} b + a b^{3}\right )} \tan \left (d x + c\right )}{{\left (a^{5} b + a^{3} b^{3}\right )} \tan \left (d x + c\right )^{3} +{\left (a^{6} + a^{4} b^{2}\right )} \tan \left (d x + c\right )^{2}} - \frac{2 \,{\left (a^{2} - 3 \, b^{2}\right )} \log \left (\tan \left (d x + c\right )\right )}{a^{4}}}{2 \, d} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 2.35913, size = 834, normalized size = 4.41 \begin{align*} -\frac{a^{7} + 2 \, a^{5} b^{2} + a^{3} b^{4} -{\left (4 \, a^{5} b^{2} d x - a^{6} b - 2 \, a^{4} b^{3} - 3 \, a^{2} b^{5}\right )} \tan \left (d x + c\right )^{3} -{\left (4 \, a^{6} b d x - a^{7} + 2 \, a^{5} b^{2} + 7 \, a^{3} b^{4} + 6 \, a b^{6}\right )} \tan \left (d x + c\right )^{2} +{\left ({\left (a^{6} b - a^{4} b^{3} - 5 \, a^{2} b^{5} - 3 \, b^{7}\right )} \tan \left (d x + c\right )^{3} +{\left (a^{7} - a^{5} b^{2} - 5 \, a^{3} b^{4} - 3 \, a b^{6}\right )} \tan \left (d x + c\right )^{2}\right )} \log \left (\frac{\tan \left (d x + c\right )^{2}}{\tan \left (d x + c\right )^{2} + 1}\right ) +{\left ({\left (5 \, a^{2} b^{5} + 3 \, b^{7}\right )} \tan \left (d x + c\right )^{3} +{\left (5 \, a^{3} b^{4} + 3 \, a b^{6}\right )} \tan \left (d x + c\right )^{2}\right )} \log \left (\frac{b^{2} \tan \left (d x + c\right )^{2} + 2 \, a b \tan \left (d x + c\right ) + a^{2}}{\tan \left (d x + c\right )^{2} + 1}\right ) - 3 \,{\left (a^{6} b + 2 \, a^{4} b^{3} + a^{2} b^{5}\right )} \tan \left (d x + c\right )}{2 \,{\left ({\left (a^{8} b + 2 \, a^{6} b^{3} + a^{4} b^{5}\right )} d \tan \left (d x + c\right )^{3} +{\left (a^{9} + 2 \, a^{7} b^{2} + a^{5} b^{4}\right )} d \tan \left (d x + c\right )^{2}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: AttributeError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.29361, size = 367, normalized size = 1.94 \begin{align*} \frac{\frac{4 \,{\left (d x + c\right )} a b}{a^{4} + 2 \, a^{2} b^{2} + b^{4}} + \frac{{\left (a^{2} - b^{2}\right )} \log \left (\tan \left (d x + c\right )^{2} + 1\right )}{a^{4} + 2 \, a^{2} b^{2} + b^{4}} - \frac{2 \,{\left (5 \, a^{2} b^{5} + 3 \, b^{7}\right )} \log \left ({\left | b \tan \left (d x + c\right ) + a \right |}\right )}{a^{8} b + 2 \, a^{6} b^{3} + a^{4} b^{5}} + \frac{2 \,{\left (5 \, a^{2} b^{5} \tan \left (d x + c\right ) + 3 \, b^{7} \tan \left (d x + c\right ) + 6 \, a^{3} b^{4} + 4 \, a b^{6}\right )}}{{\left (a^{8} + 2 \, a^{6} b^{2} + a^{4} b^{4}\right )}{\left (b \tan \left (d x + c\right ) + a\right )}} - \frac{2 \,{\left (a^{2} - 3 \, b^{2}\right )} \log \left ({\left | \tan \left (d x + c\right ) \right |}\right )}{a^{4}} + \frac{3 \, a^{2} \tan \left (d x + c\right )^{2} - 9 \, b^{2} \tan \left (d x + c\right )^{2} + 4 \, a b \tan \left (d x + c\right ) - a^{2}}{a^{4} \tan \left (d x + c\right )^{2}}}{2 \, d} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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