Optimal. Leaf size=54 \[ \frac{1}{2 b^2 \left (a x^2+b\right )}-\frac{\log \left (a x^2+b\right )}{2 b^3}+\frac{1}{4 b \left (a x^2+b\right )^2}+\frac{\log (x)}{b^3} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.035682, antiderivative size = 54, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.231, Rules used = {263, 266, 44} \[ \frac{1}{2 b^2 \left (a x^2+b\right )}-\frac{\log \left (a x^2+b\right )}{2 b^3}+\frac{1}{4 b \left (a x^2+b\right )^2}+\frac{\log (x)}{b^3} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 263
Rule 266
Rule 44
Rubi steps
\begin{align*} \int \frac{1}{\left (a+\frac{b}{x^2}\right )^3 x^7} \, dx &=\int \frac{1}{x \left (b+a x^2\right )^3} \, dx\\ &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{1}{x (b+a x)^3} \, dx,x,x^2\right )\\ &=\frac{1}{2} \operatorname{Subst}\left (\int \left (\frac{1}{b^3 x}-\frac{a}{b (b+a x)^3}-\frac{a}{b^2 (b+a x)^2}-\frac{a}{b^3 (b+a x)}\right ) \, dx,x,x^2\right )\\ &=\frac{1}{4 b \left (b+a x^2\right )^2}+\frac{1}{2 b^2 \left (b+a x^2\right )}+\frac{\log (x)}{b^3}-\frac{\log \left (b+a x^2\right )}{2 b^3}\\ \end{align*}
Mathematica [A] time = 0.0287832, size = 43, normalized size = 0.8 \[ \frac{\frac{b \left (2 a x^2+3 b\right )}{\left (a x^2+b\right )^2}-2 \log \left (a x^2+b\right )+4 \log (x)}{4 b^3} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.01, size = 49, normalized size = 0.9 \begin{align*}{\frac{1}{4\,b \left ( a{x}^{2}+b \right ) ^{2}}}+{\frac{1}{2\,{b}^{2} \left ( a{x}^{2}+b \right ) }}+{\frac{\ln \left ( x \right ) }{{b}^{3}}}-{\frac{\ln \left ( a{x}^{2}+b \right ) }{2\,{b}^{3}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [A] time = 0.992409, size = 81, normalized size = 1.5 \begin{align*} \frac{2 \, a x^{2} + 3 \, b}{4 \,{\left (a^{2} b^{2} x^{4} + 2 \, a b^{3} x^{2} + b^{4}\right )}} - \frac{\log \left (a x^{2} + b\right )}{2 \, b^{3}} + \frac{\log \left (x^{2}\right )}{2 \, b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A] time = 1.47249, size = 196, normalized size = 3.63 \begin{align*} \frac{2 \, a b x^{2} + 3 \, b^{2} - 2 \,{\left (a^{2} x^{4} + 2 \, a b x^{2} + b^{2}\right )} \log \left (a x^{2} + b\right ) + 4 \,{\left (a^{2} x^{4} + 2 \, a b x^{2} + b^{2}\right )} \log \left (x\right )}{4 \,{\left (a^{2} b^{3} x^{4} + 2 \, a b^{4} x^{2} + b^{5}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [A] time = 0.77885, size = 56, normalized size = 1.04 \begin{align*} \frac{2 a x^{2} + 3 b}{4 a^{2} b^{2} x^{4} + 8 a b^{3} x^{2} + 4 b^{4}} + \frac{\log{\left (x \right )}}{b^{3}} - \frac{\log{\left (x^{2} + \frac{b}{a} \right )}}{2 b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [A] time = 1.18607, size = 80, normalized size = 1.48 \begin{align*} \frac{\log \left (x^{2}\right )}{2 \, b^{3}} - \frac{\log \left ({\left | a x^{2} + b \right |}\right )}{2 \, b^{3}} + \frac{3 \, a^{2} x^{4} + 8 \, a b x^{2} + 6 \, b^{2}}{4 \,{\left (a x^{2} + b\right )}^{2} b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]