Integrand size = 26, antiderivative size = 72 \[ \int \frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{x^7} \, dx=-\frac {\left (a+b x^2\right ) \sqrt {a^2+2 a b x^2+b^2 x^4}}{4 a x^6}+\frac {\left (a^2+2 a b x^2+b^2 x^4\right )^{3/2}}{12 a^2 x^6} \]
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Time = 0.01 (sec) , antiderivative size = 72, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.038, Rules used = {1124} \[ \int \frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{x^7} \, dx=\frac {\left (a^2+2 a b x^2+b^2 x^4\right )^{3/2}}{12 a^2 x^6}-\frac {\left (a+b x^2\right ) \sqrt {a^2+2 a b x^2+b^2 x^4}}{4 a x^6} \]
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Rule 1124
Rubi steps \begin{align*} \text {integral}& = -\frac {\left (a+b x^2\right ) \sqrt {a^2+2 a b x^2+b^2 x^4}}{4 a x^6}+\frac {\left (a^2+2 a b x^2+b^2 x^4\right )^{3/2}}{12 a^2 x^6} \\ \end{align*}
Time = 1.01 (sec) , antiderivative size = 39, normalized size of antiderivative = 0.54 \[ \int \frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{x^7} \, dx=-\frac {\sqrt {\left (a+b x^2\right )^2} \left (2 a+3 b x^2\right )}{12 x^6 \left (a+b x^2\right )} \]
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Result contains higher order function than in optimal. Order 9 vs. order 2.
Time = 0.06 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.33
method | result | size |
pseudoelliptic | \(-\frac {\left (3 b \,x^{2}+2 a \right ) \operatorname {csgn}\left (b \,x^{2}+a \right )}{12 x^{6}}\) | \(24\) |
risch | \(\frac {\left (-\frac {b \,x^{2}}{4}-\frac {a}{6}\right ) \sqrt {\left (b \,x^{2}+a \right )^{2}}}{x^{6} \left (b \,x^{2}+a \right )}\) | \(35\) |
gosper | \(-\frac {\left (3 b \,x^{2}+2 a \right ) \sqrt {\left (b \,x^{2}+a \right )^{2}}}{12 x^{6} \left (b \,x^{2}+a \right )}\) | \(36\) |
default | \(-\frac {\left (3 b \,x^{2}+2 a \right ) \sqrt {\left (b \,x^{2}+a \right )^{2}}}{12 x^{6} \left (b \,x^{2}+a \right )}\) | \(36\) |
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none
Time = 0.26 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.21 \[ \int \frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{x^7} \, dx=-\frac {3 \, b x^{2} + 2 \, a}{12 \, x^{6}} \]
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\[ \int \frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{x^7} \, dx=\int \frac {\sqrt {\left (a + b x^{2}\right )^{2}}}{x^{7}}\, dx \]
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none
Time = 0.19 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.21 \[ \int \frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{x^7} \, dx=-\frac {3 \, b x^{2} + 2 \, a}{12 \, x^{6}} \]
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none
Time = 0.30 (sec) , antiderivative size = 31, normalized size of antiderivative = 0.43 \[ \int \frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{x^7} \, dx=-\frac {3 \, b x^{2} \mathrm {sgn}\left (b x^{2} + a\right ) + 2 \, a \mathrm {sgn}\left (b x^{2} + a\right )}{12 \, x^{6}} \]
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Time = 13.40 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.49 \[ \int \frac {\sqrt {a^2+2 a b x^2+b^2 x^4}}{x^7} \, dx=-\frac {\left (3\,b\,x^2+2\,a\right )\,\sqrt {{\left (b\,x^2+a\right )}^2}}{12\,x^6\,\left (b\,x^2+a\right )} \]
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