Integrand size = 16, antiderivative size = 45 \[ \int \frac {\sqrt {x}}{(2-b x)^{3/2}} \, dx=\frac {2 \sqrt {x}}{b \sqrt {2-b x}}-\frac {2 \arcsin \left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {2}}\right )}{b^{3/2}} \]
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Time = 0.01 (sec) , antiderivative size = 45, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.188, Rules used = {49, 56, 222} \[ \int \frac {\sqrt {x}}{(2-b x)^{3/2}} \, dx=\frac {2 \sqrt {x}}{b \sqrt {2-b x}}-\frac {2 \arcsin \left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {2}}\right )}{b^{3/2}} \]
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Rule 49
Rule 56
Rule 222
Rubi steps \begin{align*} \text {integral}& = \frac {2 \sqrt {x}}{b \sqrt {2-b x}}-\frac {\int \frac {1}{\sqrt {x} \sqrt {2-b x}} \, dx}{b} \\ & = \frac {2 \sqrt {x}}{b \sqrt {2-b x}}-\frac {2 \text {Subst}\left (\int \frac {1}{\sqrt {2-b x^2}} \, dx,x,\sqrt {x}\right )}{b} \\ & = \frac {2 \sqrt {x}}{b \sqrt {2-b x}}-\frac {2 \sin ^{-1}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {2}}\right )}{b^{3/2}} \\ \end{align*}
Time = 0.13 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.33 \[ \int \frac {\sqrt {x}}{(2-b x)^{3/2}} \, dx=\frac {2 \sqrt {x}}{b \sqrt {2-b x}}+\frac {4 \arctan \left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {2}-\sqrt {2-b x}}\right )}{b^{3/2}} \]
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Time = 0.09 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.49
method | result | size |
meijerg | \(-\frac {2 \left (\frac {\sqrt {\pi }\, \sqrt {x}\, \sqrt {2}\, \left (-b \right )^{\frac {3}{2}}}{2 b \sqrt {-\frac {b x}{2}+1}}-\frac {\sqrt {\pi }\, \left (-b \right )^{\frac {3}{2}} \arcsin \left (\frac {\sqrt {b}\, \sqrt {x}\, \sqrt {2}}{2}\right )}{b^{\frac {3}{2}}}\right )}{\sqrt {-b}\, \sqrt {\pi }\, b}\) | \(67\) |
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none
Time = 0.23 (sec) , antiderivative size = 122, normalized size of antiderivative = 2.71 \[ \int \frac {\sqrt {x}}{(2-b x)^{3/2}} \, dx=\left [-\frac {{\left (b x - 2\right )} \sqrt {-b} \log \left (-b x - \sqrt {-b x + 2} \sqrt {-b} \sqrt {x} + 1\right ) + 2 \, \sqrt {-b x + 2} b \sqrt {x}}{b^{3} x - 2 \, b^{2}}, \frac {2 \, {\left ({\left (b x - 2\right )} \sqrt {b} \arctan \left (\frac {\sqrt {-b x + 2}}{\sqrt {b} \sqrt {x}}\right ) - \sqrt {-b x + 2} b \sqrt {x}\right )}}{b^{3} x - 2 \, b^{2}}\right ] \]
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Result contains complex when optimal does not.
Time = 1.67 (sec) , antiderivative size = 90, normalized size of antiderivative = 2.00 \[ \int \frac {\sqrt {x}}{(2-b x)^{3/2}} \, dx=\begin {cases} - \frac {2 i \sqrt {x}}{b \sqrt {b x - 2}} + \frac {2 i \operatorname {acosh}{\left (\frac {\sqrt {2} \sqrt {b} \sqrt {x}}{2} \right )}}{b^{\frac {3}{2}}} & \text {for}\: \left |{b x}\right | > 2 \\\frac {2 \sqrt {x}}{b \sqrt {- b x + 2}} - \frac {2 \operatorname {asin}{\left (\frac {\sqrt {2} \sqrt {b} \sqrt {x}}{2} \right )}}{b^{\frac {3}{2}}} & \text {otherwise} \end {cases} \]
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none
Time = 0.29 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.84 \[ \int \frac {\sqrt {x}}{(2-b x)^{3/2}} \, dx=\frac {2 \, \arctan \left (\frac {\sqrt {-b x + 2}}{\sqrt {b} \sqrt {x}}\right )}{b^{\frac {3}{2}}} + \frac {2 \, \sqrt {x}}{\sqrt {-b x + 2} b} \]
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Leaf count of result is larger than twice the leaf count of optimal. 92 vs. \(2 (34) = 68\).
Time = 1.53 (sec) , antiderivative size = 92, normalized size of antiderivative = 2.04 \[ \int \frac {\sqrt {x}}{(2-b x)^{3/2}} \, dx=-\frac {{\left (\frac {\log \left ({\left (\sqrt {-b x + 2} \sqrt {-b} - \sqrt {{\left (b x - 2\right )} b + 2 \, b}\right )}^{2}\right )}{\sqrt {-b}} + \frac {8 \, \sqrt {-b}}{{\left (\sqrt {-b x + 2} \sqrt {-b} - \sqrt {{\left (b x - 2\right )} b + 2 \, b}\right )}^{2} - 2 \, b}\right )} {\left | b \right |}}{b^{2}} \]
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Timed out. \[ \int \frac {\sqrt {x}}{(2-b x)^{3/2}} \, dx=\int \frac {\sqrt {x}}{{\left (2-b\,x\right )}^{3/2}} \,d x \]
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