Optimal. Leaf size=68 \[ -\frac {3 b \sqrt {-a+b x}}{4 x}-\frac {(-a+b x)^{3/2}}{2 x^2}+\frac {3 b^2 \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{4 \sqrt {a}} \]
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Rubi [A]
time = 0.01, antiderivative size = 68, normalized size of antiderivative = 1.00, number of steps
used = 4, 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 {3 b^2 \text {ArcTan}\left (\frac {\sqrt {b x-a}}{\sqrt {a}}\right )}{4 \sqrt {a}}-\frac {(b x-a)^{3/2}}{2 x^2}-\frac {3 b \sqrt {b x-a}}{4 x} \end {gather*}
Antiderivative was successfully verified.
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Rule 43
Rule 65
Rule 211
Rubi steps
\begin {align*} \int \frac {(-a+b x)^{3/2}}{x^3} \, dx &=-\frac {(-a+b x)^{3/2}}{2 x^2}+\frac {1}{4} (3 b) \int \frac {\sqrt {-a+b x}}{x^2} \, dx\\ &=-\frac {3 b \sqrt {-a+b x}}{4 x}-\frac {(-a+b x)^{3/2}}{2 x^2}+\frac {1}{8} \left (3 b^2\right ) \int \frac {1}{x \sqrt {-a+b x}} \, dx\\ &=-\frac {3 b \sqrt {-a+b x}}{4 x}-\frac {(-a+b x)^{3/2}}{2 x^2}+\frac {1}{4} (3 b) \text {Subst}\left (\int \frac {1}{\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {-a+b x}\right )\\ &=-\frac {3 b \sqrt {-a+b x}}{4 x}-\frac {(-a+b x)^{3/2}}{2 x^2}+\frac {3 b^2 \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{4 \sqrt {a}}\\ \end {align*}
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Mathematica [A]
time = 0.09, size = 56, normalized size = 0.82 \begin {gather*} \frac {1}{4} \left (\frac {(2 a-5 b x) \sqrt {-a+b x}}{x^2}+\frac {3 b^2 \tan ^{-1}\left (\frac {\sqrt {-a+b x}}{\sqrt {a}}\right )}{\sqrt {a}}\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.11, size = 57, normalized size = 0.84
method | result | size |
risch | \(-\frac {\left (-b x +a \right ) \left (-5 b x +2 a \right )}{4 x^{2} \sqrt {b x -a}}+\frac {3 b^{2} \arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{4 \sqrt {a}}\) | \(52\) |
derivativedivides | \(2 b^{2} \left (\frac {-\frac {5 \left (b x -a \right )^{\frac {3}{2}}}{8}-\frac {3 a \sqrt {b x -a}}{8}}{b^{2} x^{2}}+\frac {3 \arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{8 \sqrt {a}}\right )\) | \(57\) |
default | \(2 b^{2} \left (\frac {-\frac {5 \left (b x -a \right )^{\frac {3}{2}}}{8}-\frac {3 a \sqrt {b x -a}}{8}}{b^{2} x^{2}}+\frac {3 \arctan \left (\frac {\sqrt {b x -a}}{\sqrt {a}}\right )}{8 \sqrt {a}}\right )\) | \(57\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.49, size = 80, normalized size = 1.18 \begin {gather*} \frac {3 \, b^{2} \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right )}{4 \, \sqrt {a}} - \frac {5 \, {\left (b x - a\right )}^{\frac {3}{2}} b^{2} + 3 \, \sqrt {b x - a} a b^{2}}{4 \, {\left ({\left (b x - a\right )}^{2} + 2 \, {\left (b x - a\right )} a + a^{2}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.46, size = 129, normalized size = 1.90 \begin {gather*} \left [-\frac {3 \, \sqrt {-a} b^{2} x^{2} \log \left (\frac {b x - 2 \, \sqrt {b x - a} \sqrt {-a} - 2 \, a}{x}\right ) + 2 \, {\left (5 \, a b x - 2 \, a^{2}\right )} \sqrt {b x - a}}{8 \, a x^{2}}, \frac {3 \, \sqrt {a} b^{2} x^{2} \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right ) - {\left (5 \, a b x - 2 \, a^{2}\right )} \sqrt {b x - a}}{4 \, a x^{2}}\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 = 1.54, size = 189, normalized size = 2.78 \begin {gather*} \begin {cases} \frac {i a \sqrt {b} \sqrt {\frac {a}{b x} - 1}}{2 x^{\frac {3}{2}}} - \frac {5 i b^{\frac {3}{2}} \sqrt {\frac {a}{b x} - 1}}{4 \sqrt {x}} + \frac {3 i b^{2} \operatorname {acosh}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{4 \sqrt {a}} & \text {for}\: \left |{\frac {a}{b x}}\right | > 1 \\- \frac {a^{2}}{2 \sqrt {b} x^{\frac {5}{2}} \sqrt {- \frac {a}{b x} + 1}} + \frac {7 a \sqrt {b}}{4 x^{\frac {3}{2}} \sqrt {- \frac {a}{b x} + 1}} - \frac {5 b^{\frac {3}{2}}}{4 \sqrt {x} \sqrt {- \frac {a}{b x} + 1}} - \frac {3 b^{2} \operatorname {asin}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{4 \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 = 0.98, size = 66, normalized size = 0.97 \begin {gather*} \frac {\frac {3 \, b^{3} \arctan \left (\frac {\sqrt {b x - a}}{\sqrt {a}}\right )}{\sqrt {a}} - \frac {5 \, {\left (b x - a\right )}^{\frac {3}{2}} b^{3} + 3 \, \sqrt {b x - a} a b^{3}}{b^{2} x^{2}}}{4 \, b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.10, size = 52, normalized size = 0.76 \begin {gather*} \frac {3\,b^2\,\mathrm {atan}\left (\frac {\sqrt {b\,x-a}}{\sqrt {a}}\right )}{4\,\sqrt {a}}-\frac {5\,{\left (b\,x-a\right )}^{3/2}}{4\,x^2}-\frac {3\,a\,\sqrt {b\,x-a}}{4\,x^2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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