Integrand size = 16, antiderivative size = 60 \[ \int \frac {(2-b x)^{3/2}}{x^{3/2}} \, dx=-3 b \sqrt {x} \sqrt {2-b x}-\frac {2 (2-b x)^{3/2}}{\sqrt {x}}-6 \sqrt {b} \arcsin \left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {2}}\right ) \]
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Time = 0.01 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {49, 52, 56, 222} \[ \int \frac {(2-b x)^{3/2}}{x^{3/2}} \, dx=-6 \sqrt {b} \arcsin \left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {2}}\right )-\frac {2 (2-b x)^{3/2}}{\sqrt {x}}-3 b \sqrt {x} \sqrt {2-b x} \]
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Rule 49
Rule 52
Rule 56
Rule 222
Rubi steps \begin{align*} \text {integral}& = -\frac {2 (2-b x)^{3/2}}{\sqrt {x}}-(3 b) \int \frac {\sqrt {2-b x}}{\sqrt {x}} \, dx \\ & = -3 b \sqrt {x} \sqrt {2-b x}-\frac {2 (2-b x)^{3/2}}{\sqrt {x}}-(3 b) \int \frac {1}{\sqrt {x} \sqrt {2-b x}} \, dx \\ & = -3 b \sqrt {x} \sqrt {2-b x}-\frac {2 (2-b x)^{3/2}}{\sqrt {x}}-(6 b) \text {Subst}\left (\int \frac {1}{\sqrt {2-b x^2}} \, dx,x,\sqrt {x}\right ) \\ & = -3 b \sqrt {x} \sqrt {2-b x}-\frac {2 (2-b x)^{3/2}}{\sqrt {x}}-6 \sqrt {b} \sin ^{-1}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {2}}\right ) \\ \end{align*}
Time = 0.14 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.03 \[ \int \frac {(2-b x)^{3/2}}{x^{3/2}} \, dx=\frac {(-4-b x) \sqrt {2-b x}}{\sqrt {x}}+12 \sqrt {b} \arctan \left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {2}-\sqrt {2-b x}}\right ) \]
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Time = 0.08 (sec) , antiderivative size = 70, normalized size of antiderivative = 1.17
method | result | size |
meijerg | \(-\frac {3 \left (-b \right )^{\frac {3}{2}} \left (-\frac {8 \sqrt {\pi }\, \sqrt {2}\, \left (\frac {b x}{4}+1\right ) \sqrt {-\frac {b x}{2}+1}}{3 \sqrt {x}\, \sqrt {-b}}-\frac {4 \sqrt {\pi }\, \sqrt {b}\, \arcsin \left (\frac {\sqrt {b}\, \sqrt {x}\, \sqrt {2}}{2}\right )}{\sqrt {-b}}\right )}{2 \sqrt {\pi }\, b}\) | \(70\) |
risch | \(\frac {\left (b^{2} x^{2}+2 b x -8\right ) \sqrt {\left (-b x +2\right ) x}}{\sqrt {-x \left (b x -2\right )}\, \sqrt {x}\, \sqrt {-b x +2}}-\frac {3 \sqrt {b}\, \arctan \left (\frac {\sqrt {b}\, \left (x -\frac {1}{b}\right )}{\sqrt {-b \,x^{2}+2 x}}\right ) \sqrt {\left (-b x +2\right ) x}}{\sqrt {x}\, \sqrt {-b x +2}}\) | \(97\) |
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Time = 0.23 (sec) , antiderivative size = 101, normalized size of antiderivative = 1.68 \[ \int \frac {(2-b x)^{3/2}}{x^{3/2}} \, dx=\left [\frac {3 \, \sqrt {-b} x \log \left (-b x + \sqrt {-b x + 2} \sqrt {-b} \sqrt {x} + 1\right ) - {\left (b x + 4\right )} \sqrt {-b x + 2} \sqrt {x}}{x}, \frac {6 \, \sqrt {b} x \arctan \left (\frac {\sqrt {-b x + 2}}{\sqrt {b} \sqrt {x}}\right ) - {\left (b x + 4\right )} \sqrt {-b x + 2} \sqrt {x}}{x}\right ] \]
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Result contains complex when optimal does not.
Time = 2.58 (sec) , antiderivative size = 158, normalized size of antiderivative = 2.63 \[ \int \frac {(2-b x)^{3/2}}{x^{3/2}} \, dx=\begin {cases} 6 i \sqrt {b} \operatorname {acosh}{\left (\frac {\sqrt {2} \sqrt {b} \sqrt {x}}{2} \right )} - \frac {i b^{2} x^{\frac {3}{2}}}{\sqrt {b x - 2}} - \frac {2 i b \sqrt {x}}{\sqrt {b x - 2}} + \frac {8 i}{\sqrt {x} \sqrt {b x - 2}} & \text {for}\: \left |{b x}\right | > 2 \\- 6 \sqrt {b} \operatorname {asin}{\left (\frac {\sqrt {2} \sqrt {b} \sqrt {x}}{2} \right )} + \frac {b^{2} x^{\frac {3}{2}}}{\sqrt {- b x + 2}} + \frac {2 b \sqrt {x}}{\sqrt {- b x + 2}} - \frac {8}{\sqrt {x} \sqrt {- b x + 2}} & \text {otherwise} \end {cases} \]
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Time = 0.30 (sec) , antiderivative size = 63, normalized size of antiderivative = 1.05 \[ \int \frac {(2-b x)^{3/2}}{x^{3/2}} \, dx=6 \, \sqrt {b} \arctan \left (\frac {\sqrt {-b x + 2}}{\sqrt {b} \sqrt {x}}\right ) - \frac {4 \, \sqrt {-b x + 2}}{\sqrt {x}} - \frac {2 \, \sqrt {-b x + 2} b}{{\left (b - \frac {b x - 2}{x}\right )} \sqrt {x}} \]
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Time = 6.15 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.25 \[ \int \frac {(2-b x)^{3/2}}{x^{3/2}} \, dx=-\frac {{\left (\frac {{\left (b x + 4\right )} \sqrt {-b x + 2}}{\sqrt {{\left (b x - 2\right )} b + 2 \, b}} + \frac {6 \, \log \left ({\left | -\sqrt {-b x + 2} \sqrt {-b} + \sqrt {{\left (b x - 2\right )} b + 2 \, b} \right |}\right )}{\sqrt {-b}}\right )} b^{2}}{{\left | b \right |}} \]
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Timed out. \[ \int \frac {(2-b x)^{3/2}}{x^{3/2}} \, dx=\int \frac {{\left (2-b\,x\right )}^{3/2}}{x^{3/2}} \,d x \]
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