Optimal. Leaf size=87 \[ \frac{a x (A b-a B)}{2 b^3 \left (a+b x^2\right )}+\frac{x (A b-2 a B)}{b^3}-\frac{\sqrt{a} (3 A b-5 a B) \tan ^{-1}\left (\frac{\sqrt{b} x}{\sqrt{a}}\right )}{2 b^{7/2}}+\frac{B x^3}{3 b^2} \]
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Rubi [A] time = 0.0702195, antiderivative size = 87, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 20, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.15, Rules used = {455, 1153, 205} \[ \frac{a x (A b-a B)}{2 b^3 \left (a+b x^2\right )}+\frac{x (A b-2 a B)}{b^3}-\frac{\sqrt{a} (3 A b-5 a B) \tan ^{-1}\left (\frac{\sqrt{b} x}{\sqrt{a}}\right )}{2 b^{7/2}}+\frac{B x^3}{3 b^2} \]
Antiderivative was successfully verified.
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Rule 455
Rule 1153
Rule 205
Rubi steps
\begin{align*} \int \frac{x^4 \left (A+B x^2\right )}{\left (a+b x^2\right )^2} \, dx &=\frac{a (A b-a B) x}{2 b^3 \left (a+b x^2\right )}-\frac{\int \frac{a (A b-a B)-2 b (A b-a B) x^2-2 b^2 B x^4}{a+b x^2} \, dx}{2 b^3}\\ &=\frac{a (A b-a B) x}{2 b^3 \left (a+b x^2\right )}-\frac{\int \left (-2 (A b-2 a B)-2 b B x^2+\frac{3 a A b-5 a^2 B}{a+b x^2}\right ) \, dx}{2 b^3}\\ &=\frac{(A b-2 a B) x}{b^3}+\frac{B x^3}{3 b^2}+\frac{a (A b-a B) x}{2 b^3 \left (a+b x^2\right )}-\frac{(a (3 A b-5 a B)) \int \frac{1}{a+b x^2} \, dx}{2 b^3}\\ &=\frac{(A b-2 a B) x}{b^3}+\frac{B x^3}{3 b^2}+\frac{a (A b-a B) x}{2 b^3 \left (a+b x^2\right )}-\frac{\sqrt{a} (3 A b-5 a B) \tan ^{-1}\left (\frac{\sqrt{b} x}{\sqrt{a}}\right )}{2 b^{7/2}}\\ \end{align*}
Mathematica [A] time = 0.0718059, size = 89, normalized size = 1.02 \[ \frac{x \left (a A b-a^2 B\right )}{2 b^3 \left (a+b x^2\right )}+\frac{x (A b-2 a B)}{b^3}+\frac{\sqrt{a} (5 a B-3 A b) \tan ^{-1}\left (\frac{\sqrt{b} x}{\sqrt{a}}\right )}{2 b^{7/2}}+\frac{B x^3}{3 b^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.008, size = 105, normalized size = 1.2 \begin{align*}{\frac{B{x}^{3}}{3\,{b}^{2}}}+{\frac{Ax}{{b}^{2}}}-2\,{\frac{Bax}{{b}^{3}}}+{\frac{aAx}{2\,{b}^{2} \left ( b{x}^{2}+a \right ) }}-{\frac{{a}^{2}Bx}{2\,{b}^{3} \left ( b{x}^{2}+a \right ) }}-{\frac{3\,Aa}{2\,{b}^{2}}\arctan \left ({bx{\frac{1}{\sqrt{ab}}}} \right ){\frac{1}{\sqrt{ab}}}}+{\frac{5\,{a}^{2}B}{2\,{b}^{3}}\arctan \left ({bx{\frac{1}{\sqrt{ab}}}} \right ){\frac{1}{\sqrt{ab}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.22287, size = 513, normalized size = 5.9 \begin{align*} \left [\frac{4 \, B b^{2} x^{5} - 4 \,{\left (5 \, B a b - 3 \, A b^{2}\right )} x^{3} - 3 \,{\left (5 \, B a^{2} - 3 \, A a b +{\left (5 \, B a b - 3 \, A b^{2}\right )} x^{2}\right )} \sqrt{-\frac{a}{b}} \log \left (\frac{b x^{2} - 2 \, b x \sqrt{-\frac{a}{b}} - a}{b x^{2} + a}\right ) - 6 \,{\left (5 \, B a^{2} - 3 \, A a b\right )} x}{12 \,{\left (b^{4} x^{2} + a b^{3}\right )}}, \frac{2 \, B b^{2} x^{5} - 2 \,{\left (5 \, B a b - 3 \, A b^{2}\right )} x^{3} + 3 \,{\left (5 \, B a^{2} - 3 \, A a b +{\left (5 \, B a b - 3 \, A b^{2}\right )} x^{2}\right )} \sqrt{\frac{a}{b}} \arctan \left (\frac{b x \sqrt{\frac{a}{b}}}{a}\right ) - 3 \,{\left (5 \, B a^{2} - 3 \, A a b\right )} x}{6 \,{\left (b^{4} x^{2} + a b^{3}\right )}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.779591, size = 128, normalized size = 1.47 \begin{align*} \frac{B x^{3}}{3 b^{2}} - \frac{x \left (- A a b + B a^{2}\right )}{2 a b^{3} + 2 b^{4} x^{2}} - \frac{\sqrt{- \frac{a}{b^{7}}} \left (- 3 A b + 5 B a\right ) \log{\left (- b^{3} \sqrt{- \frac{a}{b^{7}}} + x \right )}}{4} + \frac{\sqrt{- \frac{a}{b^{7}}} \left (- 3 A b + 5 B a\right ) \log{\left (b^{3} \sqrt{- \frac{a}{b^{7}}} + x \right )}}{4} - \frac{x \left (- A b + 2 B a\right )}{b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.11612, size = 119, normalized size = 1.37 \begin{align*} \frac{{\left (5 \, B a^{2} - 3 \, A a b\right )} \arctan \left (\frac{b x}{\sqrt{a b}}\right )}{2 \, \sqrt{a b} b^{3}} - \frac{B a^{2} x - A a b x}{2 \,{\left (b x^{2} + a\right )} b^{3}} + \frac{B b^{4} x^{3} - 6 \, B a b^{3} x + 3 \, A b^{4} x}{3 \, b^{6}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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