Optimal. Leaf size=42 \[ -\frac {\sqrt {-a+b x}}{x}+\frac {b \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{\sqrt {a}} \]
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Rubi [A]
time = 0.01, antiderivative size = 42, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {43, 65, 211}
\begin {gather*} \frac {b \text {ArcTan}\left (\frac {\sqrt {b x-a}}{\sqrt {a}}\right )}{\sqrt {a}}-\frac {\sqrt {b x-a}}{x} \end {gather*}
Antiderivative was successfully verified.
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Rule 43
Rule 65
Rule 211
Rubi steps
\begin {align*} \int \frac {\sqrt {-a+b x}}{x^2} \, dx &=-\frac {\sqrt {-a+b x}}{x}+\frac {1}{2} b \int \frac {1}{x \sqrt {-a+b x}} \, dx\\ &=-\frac {\sqrt {-a+b x}}{x}+\text {Subst}\left (\int \frac {1}{\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {-a+b x}\right )\\ &=-\frac {\sqrt {-a+b x}}{x}+\frac {b \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{\sqrt {a}}\\ \end {align*}
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Mathematica [A]
time = 0.04, size = 42, normalized size = 1.00 \begin {gather*} -\frac {\sqrt {-a+b x}}{x}+\frac {b \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{\sqrt {a}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.10, size = 41, normalized size = 0.98
method | result | size |
risch | \(\frac {-b x +a}{x \sqrt {b x -a}}+\frac {b \arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{\sqrt {a}}\) | \(40\) |
derivativedivides | \(2 b \left (-\frac {\sqrt {b x -a}}{2 b x}+\frac {\arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{2 \sqrt {a}}\right )\) | \(41\) |
default | \(2 b \left (-\frac {\sqrt {b x -a}}{2 b x}+\frac {\arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{2 \sqrt {a}}\right )\) | \(41\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.50, size = 34, normalized size = 0.81 \begin {gather*} \frac {b \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right )}{\sqrt {a}} - \frac {\sqrt {b x - a}}{x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.59, size = 98, normalized size = 2.33 \begin {gather*} \left [-\frac {\sqrt {-a} b x \log \left (\frac {b x - 2 \, \sqrt {b x - a} \sqrt {-a} - 2 \, a}{x}\right ) + 2 \, \sqrt {b x - a} a}{2 \, a x}, \frac {\sqrt {a} b x \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right ) - \sqrt {b x - a} a}{a x}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] Result contains complex when optimal does not.
time = 0.96, size = 117, normalized size = 2.79 \begin {gather*} \begin {cases} - \frac {i \sqrt {b} \sqrt {\frac {a}{b x} - 1}}{\sqrt {x}} + \frac {i b \operatorname {acosh}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{\sqrt {a}} & \text {for}\: \left |{\frac {a}{b x}}\right | > 1 \\\frac {a}{\sqrt {b} x^{\frac {3}{2}} \sqrt {- \frac {a}{b x} + 1}} - \frac {\sqrt {b}}{\sqrt {x} \sqrt {- \frac {a}{b x} + 1}} - \frac {b \operatorname {asin}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{\sqrt {a}} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.87, size = 41, normalized size = 0.98 \begin {gather*} \frac {\frac {b^{2} \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right )}{\sqrt {a}} - \frac {\sqrt {b x - a} b}{x}}{b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.10, size = 34, normalized size = 0.81 \begin {gather*} \frac {b\,\mathrm {atan}\left (\frac {\sqrt {b\,x-a}}{\sqrt {a}}\right )}{\sqrt {a}}-\frac {\sqrt {b\,x-a}}{x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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