Integrand size = 16, antiderivative size = 74 \[ \int \frac {(a-b x)^{3/2}}{\sqrt {x}} \, dx=\frac {3}{4} a \sqrt {x} \sqrt {a-b x}+\frac {1}{2} \sqrt {x} (a-b x)^{3/2}+\frac {3 a^2 \arctan \left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a-b x}}\right )}{4 \sqrt {b}} \]
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Time = 0.02 (sec) , antiderivative size = 74, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {52, 65, 223, 209} \[ \int \frac {(a-b x)^{3/2}}{\sqrt {x}} \, dx=\frac {3 a^2 \arctan \left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a-b x}}\right )}{4 \sqrt {b}}+\frac {3}{4} a \sqrt {x} \sqrt {a-b x}+\frac {1}{2} \sqrt {x} (a-b x)^{3/2} \]
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Rule 52
Rule 65
Rule 209
Rule 223
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \sqrt {x} (a-b x)^{3/2}+\frac {1}{4} (3 a) \int \frac {\sqrt {a-b x}}{\sqrt {x}} \, dx \\ & = \frac {3}{4} a \sqrt {x} \sqrt {a-b x}+\frac {1}{2} \sqrt {x} (a-b x)^{3/2}+\frac {1}{8} \left (3 a^2\right ) \int \frac {1}{\sqrt {x} \sqrt {a-b x}} \, dx \\ & = \frac {3}{4} a \sqrt {x} \sqrt {a-b x}+\frac {1}{2} \sqrt {x} (a-b x)^{3/2}+\frac {1}{4} \left (3 a^2\right ) \text {Subst}\left (\int \frac {1}{\sqrt {a-b x^2}} \, dx,x,\sqrt {x}\right ) \\ & = \frac {3}{4} a \sqrt {x} \sqrt {a-b x}+\frac {1}{2} \sqrt {x} (a-b x)^{3/2}+\frac {1}{4} \left (3 a^2\right ) \text {Subst}\left (\int \frac {1}{1+b x^2} \, dx,x,\frac {\sqrt {x}}{\sqrt {a-b x}}\right ) \\ & = \frac {3}{4} a \sqrt {x} \sqrt {a-b x}+\frac {1}{2} \sqrt {x} (a-b x)^{3/2}+\frac {3 a^2 \tan ^{-1}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a-b x}}\right )}{4 \sqrt {b}} \\ \end{align*}
Time = 0.20 (sec) , antiderivative size = 72, normalized size of antiderivative = 0.97 \[ \int \frac {(a-b x)^{3/2}}{\sqrt {x}} \, dx=-\frac {1}{4} \sqrt {x} \sqrt {a-b x} (-5 a+2 b x)+\frac {3 a^2 \arctan \left (\frac {\sqrt {b} \sqrt {x}}{-\sqrt {a}+\sqrt {a-b x}}\right )}{2 \sqrt {b}} \]
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Time = 0.08 (sec) , antiderivative size = 77, normalized size of antiderivative = 1.04
method | result | size |
risch | \(\frac {\left (-2 b x +5 a \right ) \sqrt {x}\, \sqrt {-b x +a}}{4}+\frac {3 a^{2} \arctan \left (\frac {\sqrt {b}\, \left (x -\frac {a}{2 b}\right )}{\sqrt {-b \,x^{2}+a x}}\right ) \sqrt {x \left (-b x +a \right )}}{8 \sqrt {b}\, \sqrt {x}\, \sqrt {-b x +a}}\) | \(77\) |
default | \(\frac {\left (-b x +a \right )^{\frac {3}{2}} \sqrt {x}}{2}+\frac {3 a \left (\sqrt {x}\, \sqrt {-b x +a}+\frac {a \sqrt {x \left (-b x +a \right )}\, \arctan \left (\frac {\sqrt {b}\, \left (x -\frac {a}{2 b}\right )}{\sqrt {-b \,x^{2}+a x}}\right )}{2 \sqrt {-b x +a}\, \sqrt {x}\, \sqrt {b}}\right )}{4}\) | \(83\) |
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Time = 0.23 (sec) , antiderivative size = 119, normalized size of antiderivative = 1.61 \[ \int \frac {(a-b x)^{3/2}}{\sqrt {x}} \, dx=\left [-\frac {3 \, a^{2} \sqrt {-b} \log \left (-2 \, b x + 2 \, \sqrt {-b x + a} \sqrt {-b} \sqrt {x} + a\right ) + 2 \, {\left (2 \, b^{2} x - 5 \, a b\right )} \sqrt {-b x + a} \sqrt {x}}{8 \, b}, -\frac {3 \, a^{2} \sqrt {b} \arctan \left (\frac {\sqrt {-b x + a}}{\sqrt {b} \sqrt {x}}\right ) + {\left (2 \, b^{2} x - 5 \, a b\right )} \sqrt {-b x + a} \sqrt {x}}{4 \, b}\right ] \]
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Result contains complex when optimal does not.
Time = 2.90 (sec) , antiderivative size = 190, normalized size of antiderivative = 2.57 \[ \int \frac {(a-b x)^{3/2}}{\sqrt {x}} \, dx=\begin {cases} - \frac {5 i a^{\frac {3}{2}} \sqrt {x}}{4 \sqrt {-1 + \frac {b x}{a}}} + \frac {7 i \sqrt {a} b x^{\frac {3}{2}}}{4 \sqrt {-1 + \frac {b x}{a}}} - \frac {3 i a^{2} \operatorname {acosh}{\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a}} \right )}}{4 \sqrt {b}} - \frac {i b^{2} x^{\frac {5}{2}}}{2 \sqrt {a} \sqrt {-1 + \frac {b x}{a}}} & \text {for}\: \left |{\frac {b x}{a}}\right | > 1 \\\frac {5 a^{\frac {3}{2}} \sqrt {x} \sqrt {1 - \frac {b x}{a}}}{4} - \frac {\sqrt {a} b x^{\frac {3}{2}} \sqrt {1 - \frac {b x}{a}}}{2} + \frac {3 a^{2} \operatorname {asin}{\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a}} \right )}}{4 \sqrt {b}} & \text {otherwise} \end {cases} \]
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Time = 0.31 (sec) , antiderivative size = 93, normalized size of antiderivative = 1.26 \[ \int \frac {(a-b x)^{3/2}}{\sqrt {x}} \, dx=-\frac {3 \, a^{2} \arctan \left (\frac {\sqrt {-b x + a}}{\sqrt {b} \sqrt {x}}\right )}{4 \, \sqrt {b}} + \frac {\frac {3 \, \sqrt {-b x + a} a^{2} b}{\sqrt {x}} + \frac {5 \, {\left (-b x + a\right )}^{\frac {3}{2}} a^{2}}{x^{\frac {3}{2}}}}{4 \, {\left (b^{2} - \frac {2 \, {\left (b x - a\right )} b}{x} + \frac {{\left (b x - a\right )}^{2}}{x^{2}}\right )}} \]
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Time = 76.75 (sec) , antiderivative size = 95, normalized size of antiderivative = 1.28 \[ \int \frac {(a-b x)^{3/2}}{\sqrt {x}} \, dx=\frac {{\left (\frac {3 \, a^{2} \log \left ({\left | -\sqrt {-b x + a} \sqrt {-b} + \sqrt {{\left (b x - a\right )} b + a b} \right |}\right )}{\sqrt {-b}} - \sqrt {{\left (b x - a\right )} b + a b} \sqrt {-b x + a} {\left (\frac {2 \, {\left (b x - a\right )}}{b} - \frac {3 \, a}{b}\right )}\right )} b}{4 \, {\left | b \right |}} \]
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Timed out. \[ \int \frac {(a-b x)^{3/2}}{\sqrt {x}} \, dx=\int \frac {{\left (a-b\,x\right )}^{3/2}}{\sqrt {x}} \,d x \]
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