Optimal. Leaf size=56 \[ \frac{x^{n+4} \sqrt{a+b x^n} \, _2F_1\left (1,\frac{1}{2} \left (3+\frac{8}{n}\right );2 \left (1+\frac{2}{n}\right );-\frac{b x^n}{a}\right )}{a (n+4)} \]
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Rubi [A] time = 0.0224352, antiderivative size = 65, normalized size of antiderivative = 1.16, number of steps used = 2, number of rules used = 2, integrand size = 17, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.118, Rules used = {365, 364} \[ \frac{x^{n+4} \sqrt{\frac{b x^n}{a}+1} \, _2F_1\left (\frac{1}{2},\frac{n+4}{n};2 \left (1+\frac{2}{n}\right );-\frac{b x^n}{a}\right )}{(n+4) \sqrt{a+b x^n}} \]
Antiderivative was successfully verified.
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Rule 365
Rule 364
Rubi steps
\begin{align*} \int \frac{x^{3+n}}{\sqrt{a+b x^n}} \, dx &=\frac{\sqrt{1+\frac{b x^n}{a}} \int \frac{x^{3+n}}{\sqrt{1+\frac{b x^n}{a}}} \, dx}{\sqrt{a+b x^n}}\\ &=\frac{x^{4+n} \sqrt{1+\frac{b x^n}{a}} \, _2F_1\left (\frac{1}{2},\frac{4+n}{n};2 \left (1+\frac{2}{n}\right );-\frac{b x^n}{a}\right )}{(4+n) \sqrt{a+b x^n}}\\ \end{align*}
Mathematica [A] time = 0.0201842, size = 65, normalized size = 1.16 \[ \frac{x^{n+4} \sqrt{\frac{b x^n}{a}+1} \, _2F_1\left (\frac{1}{2},\frac{n+4}{n};\frac{n+4}{n}+1;-\frac{b x^n}{a}\right )}{(n+4) \sqrt{a+b x^n}} \]
Antiderivative was successfully verified.
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Maple [F] time = 0.052, size = 0, normalized size = 0. \begin{align*} \int{{x}^{3+n}{\frac{1}{\sqrt{a+b{x}^{n}}}}}\, dx \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 \frac{x^{n + 3}}{\sqrt{b x^{n} + a}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: UnboundLocalError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 5.74012, size = 48, normalized size = 0.86 \begin{align*} \frac{x^{4} x^{n} \Gamma \left (1 + \frac{4}{n}\right ){{}_{2}F_{1}\left (\begin{matrix} \frac{1}{2}, 1 + \frac{4}{n} \\ 2 + \frac{4}{n} \end{matrix}\middle |{\frac{b x^{n} e^{i \pi }}{a}} \right )}}{\sqrt{a} n \Gamma \left (2 + \frac{4}{n}\right )} \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 \frac{x^{n + 3}}{\sqrt{b x^{n} + a}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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