Integrand size = 16, antiderivative size = 19 \[ \int \frac {\sqrt {2-b x}}{x^{5/2}} \, dx=-\frac {(2-b x)^{3/2}}{3 x^{3/2}} \]
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Time = 0.00 (sec) , antiderivative size = 19, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.062, Rules used = {37} \[ \int \frac {\sqrt {2-b x}}{x^{5/2}} \, dx=-\frac {(2-b x)^{3/2}}{3 x^{3/2}} \]
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Rule 37
Rubi steps \begin{align*} \text {integral}& = -\frac {(2-b x)^{3/2}}{3 x^{3/2}} \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 19, normalized size of antiderivative = 1.00 \[ \int \frac {\sqrt {2-b x}}{x^{5/2}} \, dx=-\frac {(2-b x)^{3/2}}{3 x^{3/2}} \]
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Time = 0.07 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.74
method | result | size |
gosper | \(-\frac {\left (-b x +2\right )^{\frac {3}{2}}}{3 x^{\frac {3}{2}}}\) | \(14\) |
meijerg | \(-\frac {2 \sqrt {2}\, \left (-\frac {b x}{2}+1\right )^{\frac {3}{2}}}{3 x^{\frac {3}{2}}}\) | \(17\) |
default | \(-\frac {2 \sqrt {-b x +2}}{3 x^{\frac {3}{2}}}+\frac {b \sqrt {-b x +2}}{3 \sqrt {x}}\) | \(29\) |
risch | \(-\frac {\sqrt {\left (-b x +2\right ) x}\, \left (b^{2} x^{2}-4 b x +4\right )}{3 x^{\frac {3}{2}} \sqrt {-b x +2}\, \sqrt {-x \left (b x -2\right )}}\) | \(47\) |
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none
Time = 0.23 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.95 \[ \int \frac {\sqrt {2-b x}}{x^{5/2}} \, dx=\frac {{\left (b x - 2\right )} \sqrt {-b x + 2}}{3 \, x^{\frac {3}{2}}} \]
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Result contains complex when optimal does not.
Time = 1.10 (sec) , antiderivative size = 83, normalized size of antiderivative = 4.37 \[ \int \frac {\sqrt {2-b x}}{x^{5/2}} \, dx=\begin {cases} \frac {b^{\frac {3}{2}} \sqrt {-1 + \frac {2}{b x}}}{3} - \frac {2 \sqrt {b} \sqrt {-1 + \frac {2}{b x}}}{3 x} & \text {for}\: \frac {1}{\left |{b x}\right |} > \frac {1}{2} \\\frac {i b^{\frac {3}{2}} \sqrt {1 - \frac {2}{b x}}}{3} - \frac {2 i \sqrt {b} \sqrt {1 - \frac {2}{b x}}}{3 x} & \text {otherwise} \end {cases} \]
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Time = 0.24 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.68 \[ \int \frac {\sqrt {2-b x}}{x^{5/2}} \, dx=-\frac {{\left (-b x + 2\right )}^{\frac {3}{2}}}{3 \, x^{\frac {3}{2}}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 35 vs. \(2 (13) = 26\).
Time = 0.30 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.84 \[ \int \frac {\sqrt {2-b x}}{x^{5/2}} \, dx=\frac {{\left (b x - 2\right )} \sqrt {-b x + 2} b^{4}}{3 \, {\left ({\left (b x - 2\right )} b + 2 \, b\right )}^{\frac {3}{2}} {\left | b \right |}} \]
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Time = 0.27 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.95 \[ \int \frac {\sqrt {2-b x}}{x^{5/2}} \, dx=\frac {\sqrt {2-b\,x}\,\left (\frac {b\,x}{3}-\frac {2}{3}\right )}{x^{3/2}} \]
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