Optimal. Leaf size=91 \[ -\frac{5 x^{3/2} \sqrt{2-b x}}{6 b^2}-\frac{5 \sqrt{x} \sqrt{2-b x}}{2 b^3}+\frac{5 \sin ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{2}}\right )}{b^{7/2}}-\frac{x^{5/2} \sqrt{2-b x}}{3 b} \]
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Rubi [A] time = 0.0205853, antiderivative size = 91, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 3, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.188, Rules used = {50, 54, 216} \[ -\frac{5 x^{3/2} \sqrt{2-b x}}{6 b^2}-\frac{5 \sqrt{x} \sqrt{2-b x}}{2 b^3}+\frac{5 \sin ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{2}}\right )}{b^{7/2}}-\frac{x^{5/2} \sqrt{2-b x}}{3 b} \]
Antiderivative was successfully verified.
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Rule 50
Rule 54
Rule 216
Rubi steps
\begin{align*} \int \frac{x^{5/2}}{\sqrt{2-b x}} \, dx &=-\frac{x^{5/2} \sqrt{2-b x}}{3 b}+\frac{5 \int \frac{x^{3/2}}{\sqrt{2-b x}} \, dx}{3 b}\\ &=-\frac{5 x^{3/2} \sqrt{2-b x}}{6 b^2}-\frac{x^{5/2} \sqrt{2-b x}}{3 b}+\frac{5 \int \frac{\sqrt{x}}{\sqrt{2-b x}} \, dx}{2 b^2}\\ &=-\frac{5 \sqrt{x} \sqrt{2-b x}}{2 b^3}-\frac{5 x^{3/2} \sqrt{2-b x}}{6 b^2}-\frac{x^{5/2} \sqrt{2-b x}}{3 b}+\frac{5 \int \frac{1}{\sqrt{x} \sqrt{2-b x}} \, dx}{2 b^3}\\ &=-\frac{5 \sqrt{x} \sqrt{2-b x}}{2 b^3}-\frac{5 x^{3/2} \sqrt{2-b x}}{6 b^2}-\frac{x^{5/2} \sqrt{2-b x}}{3 b}+\frac{5 \operatorname{Subst}\left (\int \frac{1}{\sqrt{2-b x^2}} \, dx,x,\sqrt{x}\right )}{b^3}\\ &=-\frac{5 \sqrt{x} \sqrt{2-b x}}{2 b^3}-\frac{5 x^{3/2} \sqrt{2-b x}}{6 b^2}-\frac{x^{5/2} \sqrt{2-b x}}{3 b}+\frac{5 \sin ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{2}}\right )}{b^{7/2}}\\ \end{align*}
Mathematica [A] time = 0.0411747, size = 61, normalized size = 0.67 \[ \frac{5 \sin ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{2}}\right )}{b^{7/2}}-\frac{\sqrt{x} \sqrt{2-b x} \left (2 b^2 x^2+5 b x+15\right )}{6 b^3} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.005, size = 100, normalized size = 1.1 \begin{align*} -{\frac{1}{3\,b}{x}^{{\frac{5}{2}}}\sqrt{-bx+2}}-{\frac{5}{6\,{b}^{2}}{x}^{{\frac{3}{2}}}\sqrt{-bx+2}}-{\frac{5}{2\,{b}^{3}}\sqrt{x}\sqrt{-bx+2}}+{\frac{5}{2}\sqrt{ \left ( -bx+2 \right ) x}\arctan \left ({\sqrt{b} \left ( x-{b}^{-1} \right ){\frac{1}{\sqrt{-b{x}^{2}+2\,x}}}} \right ){b}^{-{\frac{7}{2}}}{\frac{1}{\sqrt{-bx+2}}}{\frac{1}{\sqrt{x}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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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.
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Fricas [A] time = 1.58267, size = 335, normalized size = 3.68 \begin{align*} \left [-\frac{{\left (2 \, b^{3} x^{2} + 5 \, b^{2} x + 15 \, b\right )} \sqrt{-b x + 2} \sqrt{x} + 15 \, \sqrt{-b} \log \left (-b x + \sqrt{-b x + 2} \sqrt{-b} \sqrt{x} + 1\right )}{6 \, b^{4}}, -\frac{{\left (2 \, b^{3} x^{2} + 5 \, b^{2} x + 15 \, b\right )} \sqrt{-b x + 2} \sqrt{x} + 30 \, \sqrt{b} \arctan \left (\frac{\sqrt{-b x + 2}}{\sqrt{b} \sqrt{x}}\right )}{6 \, b^{4}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 12.717, size = 206, normalized size = 2.26 \begin{align*} \begin{cases} - \frac{i x^{\frac{7}{2}}}{3 \sqrt{b x - 2}} - \frac{i x^{\frac{5}{2}}}{6 b \sqrt{b x - 2}} - \frac{5 i x^{\frac{3}{2}}}{6 b^{2} \sqrt{b x - 2}} + \frac{5 i \sqrt{x}}{b^{3} \sqrt{b x - 2}} - \frac{5 i \operatorname{acosh}{\left (\frac{\sqrt{2} \sqrt{b} \sqrt{x}}{2} \right )}}{b^{\frac{7}{2}}} & \text{for}\: \frac{\left |{b x}\right |}{2} > 1 \\\frac{x^{\frac{7}{2}}}{3 \sqrt{- b x + 2}} + \frac{x^{\frac{5}{2}}}{6 b \sqrt{- b x + 2}} + \frac{5 x^{\frac{3}{2}}}{6 b^{2} \sqrt{- b x + 2}} - \frac{5 \sqrt{x}}{b^{3} \sqrt{- b x + 2}} + \frac{5 \operatorname{asin}{\left (\frac{\sqrt{2} \sqrt{b} \sqrt{x}}{2} \right )}}{b^{\frac{7}{2}}} & \text{otherwise} \end{cases} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: NotImplementedError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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