Integrand size = 11, antiderivative size = 32 \[ \int \frac {x}{(a+b x)^{5/2}} \, dx=\frac {2 a}{3 b^2 (a+b x)^{3/2}}-\frac {2}{b^2 \sqrt {a+b x}} \]
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Time = 0.01 (sec) , antiderivative size = 32, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {45} \[ \int \frac {x}{(a+b x)^{5/2}} \, dx=\frac {2 a}{3 b^2 (a+b x)^{3/2}}-\frac {2}{b^2 \sqrt {a+b x}} \]
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Rule 45
Rubi steps \begin{align*} \text {integral}& = \int \left (-\frac {a}{b (a+b x)^{5/2}}+\frac {1}{b (a+b x)^{3/2}}\right ) \, dx \\ & = \frac {2 a}{3 b^2 (a+b x)^{3/2}}-\frac {2}{b^2 \sqrt {a+b x}} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.75 \[ \int \frac {x}{(a+b x)^{5/2}} \, dx=-\frac {2 (2 a+3 b x)}{3 b^2 (a+b x)^{3/2}} \]
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Time = 0.07 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.66
method | result | size |
gosper | \(-\frac {2 \left (3 b x +2 a \right )}{3 \left (b x +a \right )^{\frac {3}{2}} b^{2}}\) | \(21\) |
trager | \(-\frac {2 \left (3 b x +2 a \right )}{3 \left (b x +a \right )^{\frac {3}{2}} b^{2}}\) | \(21\) |
pseudoelliptic | \(\frac {-6 b x -4 a}{3 \left (b x +a \right )^{\frac {3}{2}} b^{2}}\) | \(21\) |
derivativedivides | \(\frac {-\frac {2}{\sqrt {b x +a}}+\frac {2 a}{3 \left (b x +a \right )^{\frac {3}{2}}}}{b^{2}}\) | \(26\) |
default | \(\frac {-\frac {2}{\sqrt {b x +a}}+\frac {2 a}{3 \left (b x +a \right )^{\frac {3}{2}}}}{b^{2}}\) | \(26\) |
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none
Time = 0.22 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.28 \[ \int \frac {x}{(a+b x)^{5/2}} \, dx=-\frac {2 \, {\left (3 \, b x + 2 \, a\right )} \sqrt {b x + a}}{3 \, {\left (b^{4} x^{2} + 2 \, a b^{3} x + a^{2} b^{2}\right )}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 80 vs. \(2 (29) = 58\).
Time = 0.42 (sec) , antiderivative size = 80, normalized size of antiderivative = 2.50 \[ \int \frac {x}{(a+b x)^{5/2}} \, dx=\begin {cases} - \frac {4 a}{3 a b^{2} \sqrt {a + b x} + 3 b^{3} x \sqrt {a + b x}} - \frac {6 b x}{3 a b^{2} \sqrt {a + b x} + 3 b^{3} x \sqrt {a + b x}} & \text {for}\: b \neq 0 \\\frac {x^{2}}{2 a^{\frac {5}{2}}} & \text {otherwise} \end {cases} \]
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Time = 0.20 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.81 \[ \int \frac {x}{(a+b x)^{5/2}} \, dx=-\frac {2}{\sqrt {b x + a} b^{2}} + \frac {2 \, a}{3 \, {\left (b x + a\right )}^{\frac {3}{2}} b^{2}} \]
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none
Time = 0.31 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.62 \[ \int \frac {x}{(a+b x)^{5/2}} \, dx=-\frac {2 \, {\left (3 \, b x + 2 \, a\right )}}{3 \, {\left (b x + a\right )}^{\frac {3}{2}} b^{2}} \]
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Time = 0.04 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.62 \[ \int \frac {x}{(a+b x)^{5/2}} \, dx=-\frac {4\,a+6\,b\,x}{3\,b^2\,{\left (a+b\,x\right )}^{3/2}} \]
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