Integrand size = 15, antiderivative size = 59 \[ \int \frac {\left (a+\frac {b}{x}\right )^{5/2}}{x^4} \, dx=-\frac {2 a^2 \left (a+\frac {b}{x}\right )^{7/2}}{7 b^3}+\frac {4 a \left (a+\frac {b}{x}\right )^{9/2}}{9 b^3}-\frac {2 \left (a+\frac {b}{x}\right )^{11/2}}{11 b^3} \]
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Time = 0.02 (sec) , antiderivative size = 59, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {272, 45} \[ \int \frac {\left (a+\frac {b}{x}\right )^{5/2}}{x^4} \, dx=-\frac {2 a^2 \left (a+\frac {b}{x}\right )^{7/2}}{7 b^3}-\frac {2 \left (a+\frac {b}{x}\right )^{11/2}}{11 b^3}+\frac {4 a \left (a+\frac {b}{x}\right )^{9/2}}{9 b^3} \]
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Rule 45
Rule 272
Rubi steps \begin{align*} \text {integral}& = -\text {Subst}\left (\int x^2 (a+b x)^{5/2} \, dx,x,\frac {1}{x}\right ) \\ & = -\text {Subst}\left (\int \left (\frac {a^2 (a+b x)^{5/2}}{b^2}-\frac {2 a (a+b x)^{7/2}}{b^2}+\frac {(a+b x)^{9/2}}{b^2}\right ) \, dx,x,\frac {1}{x}\right ) \\ & = -\frac {2 a^2 \left (a+\frac {b}{x}\right )^{7/2}}{7 b^3}+\frac {4 a \left (a+\frac {b}{x}\right )^{9/2}}{9 b^3}-\frac {2 \left (a+\frac {b}{x}\right )^{11/2}}{11 b^3} \\ \end{align*}
Time = 0.07 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.83 \[ \int \frac {\left (a+\frac {b}{x}\right )^{5/2}}{x^4} \, dx=-\frac {2 (b+a x)^3 \sqrt {\frac {b+a x}{x}} \left (63 b^2-28 a b x+8 a^2 x^2\right )}{693 b^3 x^5} \]
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Time = 0.05 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.75
method | result | size |
gosper | \(-\frac {2 \left (a x +b \right ) \left (8 a^{2} x^{2}-28 a b x +63 b^{2}\right ) \left (\frac {a x +b}{x}\right )^{\frac {5}{2}}}{693 b^{3} x^{3}}\) | \(44\) |
risch | \(-\frac {2 \sqrt {\frac {a x +b}{x}}\, \left (8 a^{5} x^{5}-4 a^{4} b \,x^{4}+3 a^{3} b^{2} x^{3}+113 a^{2} b^{3} x^{2}+161 b^{4} x a +63 b^{5}\right )}{693 x^{5} b^{3}}\) | \(72\) |
trager | \(-\frac {2 \left (8 a^{5} x^{5}-4 a^{4} b \,x^{4}+3 a^{3} b^{2} x^{3}+113 a^{2} b^{3} x^{2}+161 b^{4} x a +63 b^{5}\right ) \sqrt {-\frac {-a x -b}{x}}}{693 x^{5} b^{3}}\) | \(76\) |
default | \(-\frac {2 \sqrt {\frac {a x +b}{x}}\, \left (a \,x^{2}+b x \right )^{\frac {3}{2}} \left (8 a^{4} x^{4}-12 a^{3} b \,x^{3}+15 a^{2} b^{2} x^{2}+98 a \,b^{3} x +63 b^{4}\right )}{693 x^{6} b^{3} \sqrt {x \left (a x +b \right )}}\) | \(81\) |
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Time = 0.31 (sec) , antiderivative size = 71, normalized size of antiderivative = 1.20 \[ \int \frac {\left (a+\frac {b}{x}\right )^{5/2}}{x^4} \, dx=-\frac {2 \, {\left (8 \, a^{5} x^{5} - 4 \, a^{4} b x^{4} + 3 \, a^{3} b^{2} x^{3} + 113 \, a^{2} b^{3} x^{2} + 161 \, a b^{4} x + 63 \, b^{5}\right )} \sqrt {\frac {a x + b}{x}}}{693 \, b^{3} x^{5}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 1073 vs. \(2 (49) = 98\).
Time = 1.21 (sec) , antiderivative size = 1073, normalized size of antiderivative = 18.19 \[ \int \frac {\left (a+\frac {b}{x}\right )^{5/2}}{x^4} \, dx=\text {Too large to display} \]
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Time = 0.19 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.80 \[ \int \frac {\left (a+\frac {b}{x}\right )^{5/2}}{x^4} \, dx=-\frac {2 \, {\left (a + \frac {b}{x}\right )}^{\frac {11}{2}}}{11 \, b^{3}} + \frac {4 \, {\left (a + \frac {b}{x}\right )}^{\frac {9}{2}} a}{9 \, b^{3}} - \frac {2 \, {\left (a + \frac {b}{x}\right )}^{\frac {7}{2}} a^{2}}{7 \, b^{3}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 270 vs. \(2 (47) = 94\).
Time = 0.34 (sec) , antiderivative size = 270, normalized size of antiderivative = 4.58 \[ \int \frac {\left (a+\frac {b}{x}\right )^{5/2}}{x^4} \, dx=\frac {2 \, {\left (924 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )}^{8} a^{4} \mathrm {sgn}\left (x\right ) + 4851 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )}^{7} a^{\frac {7}{2}} b \mathrm {sgn}\left (x\right ) + 11781 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )}^{6} a^{3} b^{2} \mathrm {sgn}\left (x\right ) + 16863 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )}^{5} a^{\frac {5}{2}} b^{3} \mathrm {sgn}\left (x\right ) + 15345 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )}^{4} a^{2} b^{4} \mathrm {sgn}\left (x\right ) + 9009 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )}^{3} a^{\frac {3}{2}} b^{5} \mathrm {sgn}\left (x\right ) + 3311 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )}^{2} a b^{6} \mathrm {sgn}\left (x\right ) + 693 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )} \sqrt {a} b^{7} \mathrm {sgn}\left (x\right ) + 63 \, b^{8} \mathrm {sgn}\left (x\right )\right )}}{693 \, {\left (\sqrt {a} x - \sqrt {a x^{2} + b x}\right )}^{11}} \]
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Time = 7.14 (sec) , antiderivative size = 108, normalized size of antiderivative = 1.83 \[ \int \frac {\left (a+\frac {b}{x}\right )^{5/2}}{x^4} \, dx=\frac {8\,a^4\,\sqrt {a+\frac {b}{x}}}{693\,b^2\,x}-\frac {226\,a^2\,\sqrt {a+\frac {b}{x}}}{693\,x^3}-\frac {2\,b^2\,\sqrt {a+\frac {b}{x}}}{11\,x^5}-\frac {2\,a^3\,\sqrt {a+\frac {b}{x}}}{231\,b\,x^2}-\frac {16\,a^5\,\sqrt {a+\frac {b}{x}}}{693\,b^3}-\frac {46\,a\,b\,\sqrt {a+\frac {b}{x}}}{99\,x^4} \]
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