Integrand size = 22, antiderivative size = 22 \[ \int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx=-\frac {1}{2 a c x^3 \arctan (a x)^2}-\frac {3 \text {Int}\left (\frac {1}{x^4 \arctan (a x)^2},x\right )}{2 a c} \]
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Not integrable
Time = 0.06 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 0, number of rules used = 0, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.000, Rules used = {} \[ \int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx=\int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = -\frac {1}{2 a c x^3 \arctan (a x)^2}-\frac {3 \int \frac {1}{x^4 \arctan (a x)^2} \, dx}{2 a c} \\ \end{align*}
Not integrable
Time = 1.23 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.09 \[ \int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx=\int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx \]
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Not integrable
Time = 79.32 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00
\[\int \frac {1}{x^{3} \left (a^{2} c \,x^{2}+c \right ) \arctan \left (a x \right )^{3}}d x\]
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Not integrable
Time = 0.24 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.14 \[ \int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx=\int { \frac {1}{{\left (a^{2} c x^{2} + c\right )} x^{3} \arctan \left (a x\right )^{3}} \,d x } \]
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Not integrable
Time = 0.95 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.23 \[ \int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx=\frac {\int \frac {1}{a^{2} x^{5} \operatorname {atan}^{3}{\left (a x \right )} + x^{3} \operatorname {atan}^{3}{\left (a x \right )}}\, dx}{c} \]
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Not integrable
Time = 0.29 (sec) , antiderivative size = 70, normalized size of antiderivative = 3.18 \[ \int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx=\int { \frac {1}{{\left (a^{2} c x^{2} + c\right )} x^{3} \arctan \left (a x\right )^{3}} \,d x } \]
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Not integrable
Time = 62.51 (sec) , antiderivative size = 3, normalized size of antiderivative = 0.14 \[ \int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx=\int { \frac {1}{{\left (a^{2} c x^{2} + c\right )} x^{3} \arctan \left (a x\right )^{3}} \,d x } \]
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Not integrable
Time = 0.42 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.09 \[ \int \frac {1}{x^3 \left (c+a^2 c x^2\right ) \arctan (a x)^3} \, dx=\int \frac {1}{x^3\,{\mathrm {atan}\left (a\,x\right )}^3\,\left (c\,a^2\,x^2+c\right )} \,d x \]
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