Integrand size = 24, antiderivative size = 76 \[ \int \frac {\left (a^2+2 a b x+b^2 x^2\right )^{5/2}}{x^8} \, dx=-\frac {(a+b x)^5 \sqrt {a^2+2 a b x+b^2 x^2}}{7 a x^7}+\frac {b (a+b x)^5 \sqrt {a^2+2 a b x+b^2 x^2}}{42 a^2 x^6} \]
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Time = 0.02 (sec) , antiderivative size = 76, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {660, 47, 37} \[ \int \frac {\left (a^2+2 a b x+b^2 x^2\right )^{5/2}}{x^8} \, dx=\frac {b (a+b x)^5 \sqrt {a^2+2 a b x+b^2 x^2}}{42 a^2 x^6}-\frac {(a+b x)^5 \sqrt {a^2+2 a b x+b^2 x^2}}{7 a x^7} \]
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Rule 37
Rule 47
Rule 660
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {a^2+2 a b x+b^2 x^2} \int \frac {\left (a b+b^2 x\right )^5}{x^8} \, dx}{b^4 \left (a b+b^2 x\right )} \\ & = -\frac {(a+b x)^5 \sqrt {a^2+2 a b x+b^2 x^2}}{7 a x^7}-\frac {\sqrt {a^2+2 a b x+b^2 x^2} \int \frac {\left (a b+b^2 x\right )^5}{x^7} \, dx}{7 a b^3 \left (a b+b^2 x\right )} \\ & = -\frac {(a+b x)^5 \sqrt {a^2+2 a b x+b^2 x^2}}{7 a x^7}+\frac {b (a+b x)^5 \sqrt {a^2+2 a b x+b^2 x^2}}{42 a^2 x^6} \\ \end{align*}
Time = 0.52 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.47 \[ \int \frac {\left (a^2+2 a b x+b^2 x^2\right )^{5/2}}{x^8} \, dx=-\frac {(6 a-b x) (a+b x)^5 \sqrt {(a+b x)^2}}{42 a^2 x^7} \]
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Time = 2.30 (sec) , antiderivative size = 73, normalized size of antiderivative = 0.96
method | result | size |
risch | \(\frac {\sqrt {\left (b x +a \right )^{2}}\, \left (-\frac {1}{2} b^{5} x^{5}-\frac {5}{3} a \,b^{4} x^{4}-\frac {5}{2} a^{2} b^{3} x^{3}-2 a^{3} b^{2} x^{2}-\frac {5}{6} a^{4} b x -\frac {1}{7} a^{5}\right )}{\left (b x +a \right ) x^{7}}\) | \(73\) |
gosper | \(-\frac {\left (21 b^{5} x^{5}+70 a \,b^{4} x^{4}+105 a^{2} b^{3} x^{3}+84 a^{3} b^{2} x^{2}+35 a^{4} b x +6 a^{5}\right ) \left (\left (b x +a \right )^{2}\right )^{\frac {5}{2}}}{42 x^{7} \left (b x +a \right )^{5}}\) | \(74\) |
default | \(-\frac {\left (21 b^{5} x^{5}+70 a \,b^{4} x^{4}+105 a^{2} b^{3} x^{3}+84 a^{3} b^{2} x^{2}+35 a^{4} b x +6 a^{5}\right ) \left (\left (b x +a \right )^{2}\right )^{\frac {5}{2}}}{42 x^{7} \left (b x +a \right )^{5}}\) | \(74\) |
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none
Time = 0.25 (sec) , antiderivative size = 57, normalized size of antiderivative = 0.75 \[ \int \frac {\left (a^2+2 a b x+b^2 x^2\right )^{5/2}}{x^8} \, dx=-\frac {21 \, b^{5} x^{5} + 70 \, a b^{4} x^{4} + 105 \, a^{2} b^{3} x^{3} + 84 \, a^{3} b^{2} x^{2} + 35 \, a^{4} b x + 6 \, a^{5}}{42 \, x^{7}} \]
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\[ \int \frac {\left (a^2+2 a b x+b^2 x^2\right )^{5/2}}{x^8} \, dx=\int \frac {\left (\left (a + b x\right )^{2}\right )^{\frac {5}{2}}}{x^{8}}\, dx \]
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Leaf count of result is larger than twice the leaf count of optimal. 225 vs. \(2 (50) = 100\).
Time = 0.21 (sec) , antiderivative size = 225, normalized size of antiderivative = 2.96 \[ \int \frac {\left (a^2+2 a b x+b^2 x^2\right )^{5/2}}{x^8} \, dx=-\frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2}\right )}^{\frac {5}{2}} b^{7}}{6 \, a^{7}} - \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2}\right )}^{\frac {5}{2}} b^{6}}{6 \, a^{6} x} + \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2}\right )}^{\frac {7}{2}} b^{5}}{6 \, a^{7} x^{2}} - \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2}\right )}^{\frac {7}{2}} b^{4}}{6 \, a^{6} x^{3}} + \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2}\right )}^{\frac {7}{2}} b^{3}}{6 \, a^{5} x^{4}} - \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2}\right )}^{\frac {7}{2}} b^{2}}{6 \, a^{4} x^{5}} + \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2}\right )}^{\frac {7}{2}} b}{6 \, a^{3} x^{6}} - \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2}\right )}^{\frac {7}{2}}}{7 \, a^{2} x^{7}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 108 vs. \(2 (50) = 100\).
Time = 0.30 (sec) , antiderivative size = 108, normalized size of antiderivative = 1.42 \[ \int \frac {\left (a^2+2 a b x+b^2 x^2\right )^{5/2}}{x^8} \, dx=\frac {b^{7} \mathrm {sgn}\left (b x + a\right )}{42 \, a^{2}} - \frac {21 \, b^{5} x^{5} \mathrm {sgn}\left (b x + a\right ) + 70 \, a b^{4} x^{4} \mathrm {sgn}\left (b x + a\right ) + 105 \, a^{2} b^{3} x^{3} \mathrm {sgn}\left (b x + a\right ) + 84 \, a^{3} b^{2} x^{2} \mathrm {sgn}\left (b x + a\right ) + 35 \, a^{4} b x \mathrm {sgn}\left (b x + a\right ) + 6 \, a^{5} \mathrm {sgn}\left (b x + a\right )}{42 \, x^{7}} \]
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Time = 10.36 (sec) , antiderivative size = 207, normalized size of antiderivative = 2.72 \[ \int \frac {\left (a^2+2 a b x+b^2 x^2\right )^{5/2}}{x^8} \, dx=-\frac {a^5\,\sqrt {a^2+2\,a\,b\,x+b^2\,x^2}}{7\,x^7\,\left (a+b\,x\right )}-\frac {b^5\,\sqrt {a^2+2\,a\,b\,x+b^2\,x^2}}{2\,x^2\,\left (a+b\,x\right )}-\frac {5\,a^2\,b^3\,\sqrt {a^2+2\,a\,b\,x+b^2\,x^2}}{2\,x^4\,\left (a+b\,x\right )}-\frac {2\,a^3\,b^2\,\sqrt {a^2+2\,a\,b\,x+b^2\,x^2}}{x^5\,\left (a+b\,x\right )}-\frac {5\,a\,b^4\,\sqrt {a^2+2\,a\,b\,x+b^2\,x^2}}{3\,x^3\,\left (a+b\,x\right )}-\frac {5\,a^4\,b\,\sqrt {a^2+2\,a\,b\,x+b^2\,x^2}}{6\,x^6\,\left (a+b\,x\right )} \]
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