Optimal. Leaf size=72 \[ a^2 \sqrt{a+b x^2}+a^{5/2} \left (-\tanh ^{-1}\left (\frac{\sqrt{a+b x^2}}{\sqrt{a}}\right )\right )+\frac{1}{3} a \left (a+b x^2\right )^{3/2}+\frac{1}{5} \left (a+b x^2\right )^{5/2} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.0434574, antiderivative size = 72, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 4, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.267, Rules used = {266, 50, 63, 208} \[ a^2 \sqrt{a+b x^2}+a^{5/2} \left (-\tanh ^{-1}\left (\frac{\sqrt{a+b x^2}}{\sqrt{a}}\right )\right )+\frac{1}{3} a \left (a+b x^2\right )^{3/2}+\frac{1}{5} \left (a+b x^2\right )^{5/2} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 266
Rule 50
Rule 63
Rule 208
Rubi steps
\begin{align*} \int \frac{\left (a+b x^2\right )^{5/2}}{x} \, dx &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{(a+b x)^{5/2}}{x} \, dx,x,x^2\right )\\ &=\frac{1}{5} \left (a+b x^2\right )^{5/2}+\frac{1}{2} a \operatorname{Subst}\left (\int \frac{(a+b x)^{3/2}}{x} \, dx,x,x^2\right )\\ &=\frac{1}{3} a \left (a+b x^2\right )^{3/2}+\frac{1}{5} \left (a+b x^2\right )^{5/2}+\frac{1}{2} a^2 \operatorname{Subst}\left (\int \frac{\sqrt{a+b x}}{x} \, dx,x,x^2\right )\\ &=a^2 \sqrt{a+b x^2}+\frac{1}{3} a \left (a+b x^2\right )^{3/2}+\frac{1}{5} \left (a+b x^2\right )^{5/2}+\frac{1}{2} a^3 \operatorname{Subst}\left (\int \frac{1}{x \sqrt{a+b x}} \, dx,x,x^2\right )\\ &=a^2 \sqrt{a+b x^2}+\frac{1}{3} a \left (a+b x^2\right )^{3/2}+\frac{1}{5} \left (a+b x^2\right )^{5/2}+\frac{a^3 \operatorname{Subst}\left (\int \frac{1}{-\frac{a}{b}+\frac{x^2}{b}} \, dx,x,\sqrt{a+b x^2}\right )}{b}\\ &=a^2 \sqrt{a+b x^2}+\frac{1}{3} a \left (a+b x^2\right )^{3/2}+\frac{1}{5} \left (a+b x^2\right )^{5/2}-a^{5/2} \tanh ^{-1}\left (\frac{\sqrt{a+b x^2}}{\sqrt{a}}\right )\\ \end{align*}
Mathematica [A] time = 0.0267292, size = 62, normalized size = 0.86 \[ \frac{1}{15} \sqrt{a+b x^2} \left (23 a^2+11 a b x^2+3 b^2 x^4\right )-a^{5/2} \tanh ^{-1}\left (\frac{\sqrt{a+b x^2}}{\sqrt{a}}\right ) \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.005, size = 66, normalized size = 0.9 \begin{align*}{\frac{1}{5} \left ( b{x}^{2}+a \right ) ^{{\frac{5}{2}}}}+{\frac{a}{3} \left ( b{x}^{2}+a \right ) ^{{\frac{3}{2}}}}-{a}^{{\frac{5}{2}}}\ln \left ({\frac{1}{x} \left ( 2\,a+2\,\sqrt{a}\sqrt{b{x}^{2}+a} \right ) } \right ) +{a}^{2}\sqrt{b{x}^{2}+a} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
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.
[In]
[Out]
________________________________________________________________________________________
Fricas [A] time = 1.589, size = 311, normalized size = 4.32 \begin{align*} \left [\frac{1}{2} \, a^{\frac{5}{2}} \log \left (-\frac{b x^{2} - 2 \, \sqrt{b x^{2} + a} \sqrt{a} + 2 \, a}{x^{2}}\right ) + \frac{1}{15} \,{\left (3 \, b^{2} x^{4} + 11 \, a b x^{2} + 23 \, a^{2}\right )} \sqrt{b x^{2} + a}, \sqrt{-a} a^{2} \arctan \left (\frac{\sqrt{-a}}{\sqrt{b x^{2} + a}}\right ) + \frac{1}{15} \,{\left (3 \, b^{2} x^{4} + 11 \, a b x^{2} + 23 \, a^{2}\right )} \sqrt{b x^{2} + a}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [A] time = 3.40694, size = 105, normalized size = 1.46 \begin{align*} \frac{23 a^{\frac{5}{2}} \sqrt{1 + \frac{b x^{2}}{a}}}{15} + \frac{a^{\frac{5}{2}} \log{\left (\frac{b x^{2}}{a} \right )}}{2} - a^{\frac{5}{2}} \log{\left (\sqrt{1 + \frac{b x^{2}}{a}} + 1 \right )} + \frac{11 a^{\frac{3}{2}} b x^{2} \sqrt{1 + \frac{b x^{2}}{a}}}{15} + \frac{\sqrt{a} b^{2} x^{4} \sqrt{1 + \frac{b x^{2}}{a}}}{5} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [A] time = 2.772, size = 84, normalized size = 1.17 \begin{align*} \frac{a^{3} \arctan \left (\frac{\sqrt{b x^{2} + a}}{\sqrt{-a}}\right )}{\sqrt{-a}} + \frac{1}{5} \,{\left (b x^{2} + a\right )}^{\frac{5}{2}} + \frac{1}{3} \,{\left (b x^{2} + a\right )}^{\frac{3}{2}} a + \sqrt{b x^{2} + a} a^{2} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]