Optimal. Leaf size=61 \[ \frac{2 x \sqrt{\frac{a}{x^2}+b x^{n-2}}}{n}-\frac{2 \sqrt{a} \tanh ^{-1}\left (\frac{\sqrt{a}}{x \sqrt{\frac{a}{x^2}+b x^{n-2}}}\right )}{n} \]
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Rubi [A] time = 0.0799542, antiderivative size = 61, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.267, Rules used = {1979, 2007, 2029, 206} \[ \frac{2 x \sqrt{\frac{a}{x^2}+b x^{n-2}}}{n}-\frac{2 \sqrt{a} \tanh ^{-1}\left (\frac{\sqrt{a}}{x \sqrt{\frac{a}{x^2}+b x^{n-2}}}\right )}{n} \]
Antiderivative was successfully verified.
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Rule 1979
Rule 2007
Rule 2029
Rule 206
Rubi steps
\begin{align*} \int \sqrt{\frac{a+b x^n}{x^2}} \, dx &=\int \sqrt{\frac{a}{x^2}+b x^{-2+n}} \, dx\\ &=\frac{2 x \sqrt{\frac{a}{x^2}+b x^{-2+n}}}{n}+a \int \frac{1}{x^2 \sqrt{\frac{a}{x^2}+b x^{-2+n}}} \, dx\\ &=\frac{2 x \sqrt{\frac{a}{x^2}+b x^{-2+n}}}{n}-\frac{(2 a) \operatorname{Subst}\left (\int \frac{1}{1-a x^2} \, dx,x,\frac{1}{x \sqrt{\frac{a}{x^2}+b x^{-2+n}}}\right )}{n}\\ &=\frac{2 x \sqrt{\frac{a}{x^2}+b x^{-2+n}}}{n}-\frac{2 \sqrt{a} \tanh ^{-1}\left (\frac{\sqrt{a}}{x \sqrt{\frac{a}{x^2}+b x^{-2+n}}}\right )}{n}\\ \end{align*}
Mathematica [A] time = 0.0209261, size = 70, normalized size = 1.15 \[ \frac{x \sqrt{\frac{a+b x^n}{x^2}} \left (2 \sqrt{a+b x^n}-2 \sqrt{a} \tanh ^{-1}\left (\frac{\sqrt{a+b x^n}}{\sqrt{a}}\right )\right )}{n \sqrt{a+b x^n}} \]
Antiderivative was successfully verified.
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Maple [A] time = 1.267, size = 74, normalized size = 1.2 \begin{align*} 2\,{\frac{x}{n}\sqrt{{\frac{a+b{{\rm e}^{n\ln \left ( x \right ) }}}{{x}^{2}}}}}-2\,{\frac{x\sqrt{a}}{n\sqrt{a+b{{\rm e}^{n\ln \left ( x \right ) }}}}{\it Artanh} \left ({\frac{\sqrt{a+b{{\rm e}^{n\ln \left ( x \right ) }}}}{\sqrt{a}}} \right ) \sqrt{{\frac{a+b{{\rm e}^{n\ln \left ( x \right ) }}}{{x}^{2}}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \sqrt{\frac{b x^{n} + a}{x^{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 0.775976, size = 255, normalized size = 4.18 \begin{align*} \left [\frac{2 \, x \sqrt{\frac{b x^{n} + a}{x^{2}}} + \sqrt{a} \log \left (\frac{b x^{n} - 2 \, \sqrt{a} x \sqrt{\frac{b x^{n} + a}{x^{2}}} + 2 \, a}{x^{n}}\right )}{n}, \frac{2 \,{\left (x \sqrt{\frac{b x^{n} + a}{x^{2}}} + \sqrt{-a} \arctan \left (\frac{\sqrt{-a} x \sqrt{\frac{b x^{n} + a}{x^{2}}}}{a}\right )\right )}}{n}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \sqrt{\frac{b x^{n} + a}{x^{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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