Optimal. Leaf size=42 \[ -\frac{b}{a^2 (a+b x)}-\frac{2 b \log (x)}{a^3}+\frac{2 b \log (a+b x)}{a^3}-\frac{1}{a^2 x} \]
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Rubi [A] time = 0.0239151, antiderivative size = 42, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 2, integrand size = 17, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.118, Rules used = {1584, 44} \[ -\frac{b}{a^2 (a+b x)}-\frac{2 b \log (x)}{a^3}+\frac{2 b \log (a+b x)}{a^3}-\frac{1}{a^2 x} \]
Antiderivative was successfully verified.
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Rule 1584
Rule 44
Rubi steps
\begin{align*} \int \frac{x^2}{\left (a x^2+b x^3\right )^2} \, dx &=\int \frac{1}{x^2 (a+b x)^2} \, dx\\ &=\int \left (\frac{1}{a^2 x^2}-\frac{2 b}{a^3 x}+\frac{b^2}{a^2 (a+b x)^2}+\frac{2 b^2}{a^3 (a+b x)}\right ) \, dx\\ &=-\frac{1}{a^2 x}-\frac{b}{a^2 (a+b x)}-\frac{2 b \log (x)}{a^3}+\frac{2 b \log (a+b x)}{a^3}\\ \end{align*}
Mathematica [A] time = 0.0374035, size = 35, normalized size = 0.83 \[ -\frac{a \left (\frac{b}{a+b x}+\frac{1}{x}\right )-2 b \log (a+b x)+2 b \log (x)}{a^3} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.009, size = 43, normalized size = 1. \begin{align*} -{\frac{1}{{a}^{2}x}}-{\frac{b}{{a}^{2} \left ( bx+a \right ) }}-2\,{\frac{b\ln \left ( x \right ) }{{a}^{3}}}+2\,{\frac{b\ln \left ( bx+a \right ) }{{a}^{3}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.00111, size = 61, normalized size = 1.45 \begin{align*} -\frac{2 \, b x + a}{a^{2} b x^{2} + a^{3} x} + \frac{2 \, b \log \left (b x + a\right )}{a^{3}} - \frac{2 \, b \log \left (x\right )}{a^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 0.725405, size = 138, normalized size = 3.29 \begin{align*} -\frac{2 \, a b x + a^{2} - 2 \,{\left (b^{2} x^{2} + a b x\right )} \log \left (b x + a\right ) + 2 \,{\left (b^{2} x^{2} + a b x\right )} \log \left (x\right )}{a^{3} b x^{2} + a^{4} x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 1.24111, size = 36, normalized size = 0.86 \begin{align*} - \frac{a + 2 b x}{a^{3} x + a^{2} b x^{2}} + \frac{2 b \left (- \log{\left (x \right )} + \log{\left (\frac{a}{b} + x \right )}\right )}{a^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.16753, size = 61, normalized size = 1.45 \begin{align*} \frac{2 \, b \log \left ({\left | b x + a \right |}\right )}{a^{3}} - \frac{2 \, b \log \left ({\left | x \right |}\right )}{a^{3}} - \frac{2 \, b x + a}{{\left (b x^{2} + a x\right )} a^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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