Integrand size = 15, antiderivative size = 18 \[ \int \frac {\sqrt {a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {2 \left (a+\frac {b}{x^3}\right )^{3/2}}{9 b} \]
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Time = 0.01 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.067, Rules used = {267} \[ \int \frac {\sqrt {a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {2 \left (a+\frac {b}{x^3}\right )^{3/2}}{9 b} \]
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Rule 267
Rubi steps \begin{align*} \text {integral}& = -\frac {2 \left (a+\frac {b}{x^3}\right )^{3/2}}{9 b} \\ \end{align*}
Time = 0.23 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.00 \[ \int \frac {\sqrt {a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {2 \left (a+\frac {b}{x^3}\right )^{3/2}}{9 b} \]
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Time = 0.07 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.83
method | result | size |
derivativedivides | \(-\frac {2 \left (a +\frac {b}{x^{3}}\right )^{\frac {3}{2}}}{9 b}\) | \(15\) |
gosper | \(-\frac {2 \left (a \,x^{3}+b \right ) \sqrt {\frac {a \,x^{3}+b}{x^{3}}}}{9 x^{3} b}\) | \(29\) |
risch | \(-\frac {2 \left (a \,x^{3}+b \right ) \sqrt {\frac {a \,x^{3}+b}{x^{3}}}}{9 x^{3} b}\) | \(29\) |
trager | \(-\frac {2 \left (a \,x^{3}+b \right ) \sqrt {-\frac {-a \,x^{3}-b}{x^{3}}}}{9 x^{3} b}\) | \(33\) |
default | \(-\frac {2 \sqrt {\frac {a \,x^{3}+b}{x^{3}}}\, \sqrt {a \,x^{4}+b x}\, \left (a \,x^{3}+b \right )}{9 x^{3} \sqrt {x \left (a \,x^{3}+b \right )}\, b}\) | \(51\) |
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none
Time = 0.28 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.56 \[ \int \frac {\sqrt {a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {2 \, {\left (a x^{3} + b\right )} \sqrt {\frac {a x^{3} + b}{x^{3}}}}{9 \, b x^{3}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 46 vs. \(2 (15) = 30\).
Time = 0.58 (sec) , antiderivative size = 46, normalized size of antiderivative = 2.56 \[ \int \frac {\sqrt {a+\frac {b}{x^3}}}{x^4} \, dx=- \frac {2 a^{\frac {3}{2}} \sqrt {1 + \frac {b}{a x^{3}}}}{9 b} - \frac {2 \sqrt {a} \sqrt {1 + \frac {b}{a x^{3}}}}{9 x^{3}} \]
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none
Time = 0.22 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.78 \[ \int \frac {\sqrt {a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {2 \, {\left (a + \frac {b}{x^{3}}\right )}^{\frac {3}{2}}}{9 \, b} \]
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none
Time = 0.28 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.78 \[ \int \frac {\sqrt {a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {2 \, {\left (a + \frac {b}{x^{3}}\right )}^{\frac {3}{2}}}{9 \, b} \]
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Time = 6.08 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.33 \[ \int \frac {\sqrt {a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {2\,\sqrt {a+\frac {b}{x^3}}\,\left (a\,x^3+b\right )}{9\,b\,x^3} \]
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