Integrand size = 18, antiderivative size = 18 \[ \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx=\text {Int}\left (\frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2},x\right ) \]
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Not integrable
Time = 0.03 (sec) , antiderivative size = 18, 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 = {} \[ \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx=\int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx \\ \end{align*}
Not integrable
Time = 8.34 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.11 \[ \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx=\int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx \]
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Not integrable
Time = 0.17 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.00
\[\int \frac {x^{2}}{{\left (a +b \tan \left (d \,x^{2}+c \right )\right )}^{2}}d x\]
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Not integrable
Time = 0.25 (sec) , antiderivative size = 38, normalized size of antiderivative = 2.11 \[ \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx=\int { \frac {x^{2}}{{\left (b \tan \left (d x^{2} + c\right ) + a\right )}^{2}} \,d x } \]
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Not integrable
Time = 1.07 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.94 \[ \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx=\int \frac {x^{2}}{\left (a + b \tan {\left (c + d x^{2} \right )}\right )^{2}}\, dx \]
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Not integrable
Time = 10.41 (sec) , antiderivative size = 764, normalized size of antiderivative = 42.44 \[ \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx=\int { \frac {x^{2}}{{\left (b \tan \left (d x^{2} + c\right ) + a\right )}^{2}} \,d x } \]
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Not integrable
Time = 0.61 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.11 \[ \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx=\int { \frac {x^{2}}{{\left (b \tan \left (d x^{2} + c\right ) + a\right )}^{2}} \,d x } \]
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Not integrable
Time = 4.12 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.11 \[ \int \frac {x^2}{\left (a+b \tan \left (c+d x^2\right )\right )^2} \, dx=\int \frac {x^2}{{\left (a+b\,\mathrm {tan}\left (d\,x^2+c\right )\right )}^2} \,d x \]
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