Optimal. Leaf size=46 \[ \sqrt{x} \sqrt{a-b x}+\frac{a \tan ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a-b x}}\right )}{\sqrt{b}} \]
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Rubi [A] time = 0.0169224, antiderivative size = 46, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.25, Rules used = {50, 63, 217, 203} \[ \sqrt{x} \sqrt{a-b x}+\frac{a \tan ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a-b x}}\right )}{\sqrt{b}} \]
Antiderivative was successfully verified.
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Rule 50
Rule 63
Rule 217
Rule 203
Rubi steps
\begin{align*} \int \frac{\sqrt{a-b x}}{\sqrt{x}} \, dx &=\sqrt{x} \sqrt{a-b x}+\frac{1}{2} a \int \frac{1}{\sqrt{x} \sqrt{a-b x}} \, dx\\ &=\sqrt{x} \sqrt{a-b x}+a \operatorname{Subst}\left (\int \frac{1}{\sqrt{a-b x^2}} \, dx,x,\sqrt{x}\right )\\ &=\sqrt{x} \sqrt{a-b x}+a \operatorname{Subst}\left (\int \frac{1}{1+b x^2} \, dx,x,\frac{\sqrt{x}}{\sqrt{a-b x}}\right )\\ &=\sqrt{x} \sqrt{a-b x}+\frac{a \tan ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a-b x}}\right )}{\sqrt{b}}\\ \end{align*}
Mathematica [A] time = 0.0902888, size = 65, normalized size = 1.41 \[ \frac{\frac{a^{3/2} \sqrt{1-\frac{b x}{a}} \sin ^{-1}\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a}}\right )}{\sqrt{b}}+\sqrt{x} (a-b x)}{\sqrt{a-b x}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.004, size = 66, normalized size = 1.4 \begin{align*} \sqrt{x}\sqrt{-bx+a}+{\frac{a}{2}\sqrt{x \left ( -bx+a \right ) }\arctan \left ({\sqrt{b} \left ( x-{\frac{a}{2\,b}} \right ){\frac{1}{\sqrt{-b{x}^{2}+ax}}}} \right ){\frac{1}{\sqrt{x}}}{\frac{1}{\sqrt{-bx+a}}}{\frac{1}{\sqrt{b}}}} \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 = 1.58569, size = 257, normalized size = 5.59 \begin{align*} \left [-\frac{a \sqrt{-b} \log \left (-2 \, b x + 2 \, \sqrt{-b x + a} \sqrt{-b} \sqrt{x} + a\right ) - 2 \, \sqrt{-b x + a} b \sqrt{x}}{2 \, b}, -\frac{a \sqrt{b} \arctan \left (\frac{\sqrt{-b x + a}}{\sqrt{b} \sqrt{x}}\right ) - \sqrt{-b x + a} b \sqrt{x}}{b}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 2.00933, size = 121, normalized size = 2.63 \begin{align*} \begin{cases} - \frac{i \sqrt{a} \sqrt{x}}{\sqrt{-1 + \frac{b x}{a}}} - \frac{i a \operatorname{acosh}{\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a}} \right )}}{\sqrt{b}} + \frac{i b x^{\frac{3}{2}}}{\sqrt{a} \sqrt{-1 + \frac{b x}{a}}} & \text{for}\: \frac{\left |{b x}\right |}{\left |{a}\right |} > 1 \\\sqrt{a} \sqrt{x} \sqrt{1 - \frac{b x}{a}} + \frac{a \operatorname{asin}{\left (\frac{\sqrt{b} \sqrt{x}}{\sqrt{a}} \right )}}{\sqrt{b}} & \text{otherwise} \end{cases} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [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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