Integrand size = 22, antiderivative size = 66 \[ \int \frac {\left (a+b x^2\right )^2}{x^4 \left (c+d x^2\right )} \, dx=-\frac {a^2}{3 c x^3}-\frac {a (2 b c-a d)}{c^2 x}+\frac {(b c-a d)^2 \arctan \left (\frac {\sqrt {d} x}{\sqrt {c}}\right )}{c^{5/2} \sqrt {d}} \]
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Time = 0.05 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {472, 211} \[ \int \frac {\left (a+b x^2\right )^2}{x^4 \left (c+d x^2\right )} \, dx=-\frac {a^2}{3 c x^3}+\frac {(b c-a d)^2 \arctan \left (\frac {\sqrt {d} x}{\sqrt {c}}\right )}{c^{5/2} \sqrt {d}}-\frac {a (2 b c-a d)}{c^2 x} \]
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Rule 211
Rule 472
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {a^2}{c x^4}-\frac {a (-2 b c+a d)}{c^2 x^2}+\frac {(b c-a d)^2}{c^2 \left (c+d x^2\right )}\right ) \, dx \\ & = -\frac {a^2}{3 c x^3}-\frac {a (2 b c-a d)}{c^2 x}+\frac {(b c-a d)^2 \int \frac {1}{c+d x^2} \, dx}{c^2} \\ & = -\frac {a^2}{3 c x^3}-\frac {a (2 b c-a d)}{c^2 x}+\frac {(b c-a d)^2 \tan ^{-1}\left (\frac {\sqrt {d} x}{\sqrt {c}}\right )}{c^{5/2} \sqrt {d}} \\ \end{align*}
Time = 0.04 (sec) , antiderivative size = 64, normalized size of antiderivative = 0.97 \[ \int \frac {\left (a+b x^2\right )^2}{x^4 \left (c+d x^2\right )} \, dx=-\frac {a^2}{3 c x^3}+\frac {a (-2 b c+a d)}{c^2 x}+\frac {(b c-a d)^2 \arctan \left (\frac {\sqrt {d} x}{\sqrt {c}}\right )}{c^{5/2} \sqrt {d}} \]
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Time = 2.68 (sec) , antiderivative size = 68, normalized size of antiderivative = 1.03
method | result | size |
default | \(-\frac {a^{2}}{3 c \,x^{3}}+\frac {a \left (a d -2 b c \right )}{c^{2} x}+\frac {\left (a^{2} d^{2}-2 a b c d +b^{2} c^{2}\right ) \arctan \left (\frac {d x}{\sqrt {c d}}\right )}{c^{2} \sqrt {c d}}\) | \(68\) |
risch | \(\frac {\frac {a \left (a d -2 b c \right ) x^{2}}{c^{2}}-\frac {a^{2}}{3 c}}{x^{3}}-\frac {\ln \left (-\sqrt {-c d}\, x +c \right ) a^{2} d^{2}}{2 \sqrt {-c d}\, c^{2}}+\frac {\ln \left (-\sqrt {-c d}\, x +c \right ) a b d}{\sqrt {-c d}\, c}-\frac {\ln \left (-\sqrt {-c d}\, x +c \right ) b^{2}}{2 \sqrt {-c d}}+\frac {\ln \left (-\sqrt {-c d}\, x -c \right ) a^{2} d^{2}}{2 \sqrt {-c d}\, c^{2}}-\frac {\ln \left (-\sqrt {-c d}\, x -c \right ) a b d}{\sqrt {-c d}\, c}+\frac {\ln \left (-\sqrt {-c d}\, x -c \right ) b^{2}}{2 \sqrt {-c d}}\) | \(192\) |
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Time = 0.25 (sec) , antiderivative size = 192, normalized size of antiderivative = 2.91 \[ \int \frac {\left (a+b x^2\right )^2}{x^4 \left (c+d x^2\right )} \, dx=\left [-\frac {3 \, {\left (b^{2} c^{2} - 2 \, a b c d + a^{2} d^{2}\right )} \sqrt {-c d} x^{3} \log \left (\frac {d x^{2} - 2 \, \sqrt {-c d} x - c}{d x^{2} + c}\right ) + 2 \, a^{2} c^{2} d + 6 \, {\left (2 \, a b c^{2} d - a^{2} c d^{2}\right )} x^{2}}{6 \, c^{3} d x^{3}}, \frac {3 \, {\left (b^{2} c^{2} - 2 \, a b c d + a^{2} d^{2}\right )} \sqrt {c d} x^{3} \arctan \left (\frac {\sqrt {c d} x}{c}\right ) - a^{2} c^{2} d - 3 \, {\left (2 \, a b c^{2} d - a^{2} c d^{2}\right )} x^{2}}{3 \, c^{3} d x^{3}}\right ] \]
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Leaf count of result is larger than twice the leaf count of optimal. 172 vs. \(2 (56) = 112\).
Time = 0.38 (sec) , antiderivative size = 172, normalized size of antiderivative = 2.61 \[ \int \frac {\left (a+b x^2\right )^2}{x^4 \left (c+d x^2\right )} \, dx=- \frac {\sqrt {- \frac {1}{c^{5} d}} \left (a d - b c\right )^{2} \log {\left (- \frac {c^{3} \sqrt {- \frac {1}{c^{5} d}} \left (a d - b c\right )^{2}}{a^{2} d^{2} - 2 a b c d + b^{2} c^{2}} + x \right )}}{2} + \frac {\sqrt {- \frac {1}{c^{5} d}} \left (a d - b c\right )^{2} \log {\left (\frac {c^{3} \sqrt {- \frac {1}{c^{5} d}} \left (a d - b c\right )^{2}}{a^{2} d^{2} - 2 a b c d + b^{2} c^{2}} + x \right )}}{2} + \frac {- a^{2} c + x^{2} \cdot \left (3 a^{2} d - 6 a b c\right )}{3 c^{2} x^{3}} \]
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Time = 0.28 (sec) , antiderivative size = 71, normalized size of antiderivative = 1.08 \[ \int \frac {\left (a+b x^2\right )^2}{x^4 \left (c+d x^2\right )} \, dx=\frac {{\left (b^{2} c^{2} - 2 \, a b c d + a^{2} d^{2}\right )} \arctan \left (\frac {d x}{\sqrt {c d}}\right )}{\sqrt {c d} c^{2}} - \frac {a^{2} c + 3 \, {\left (2 \, a b c - a^{2} d\right )} x^{2}}{3 \, c^{2} x^{3}} \]
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Time = 0.29 (sec) , antiderivative size = 71, normalized size of antiderivative = 1.08 \[ \int \frac {\left (a+b x^2\right )^2}{x^4 \left (c+d x^2\right )} \, dx=\frac {{\left (b^{2} c^{2} - 2 \, a b c d + a^{2} d^{2}\right )} \arctan \left (\frac {d x}{\sqrt {c d}}\right )}{\sqrt {c d} c^{2}} - \frac {6 \, a b c x^{2} - 3 \, a^{2} d x^{2} + a^{2} c}{3 \, c^{2} x^{3}} \]
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Time = 5.31 (sec) , antiderivative size = 90, normalized size of antiderivative = 1.36 \[ \int \frac {\left (a+b x^2\right )^2}{x^4 \left (c+d x^2\right )} \, dx=\frac {a^2\,d}{c^2\,x}-\frac {a^2}{3\,c\,x^3}+\frac {a^2\,d^{3/2}\,\mathrm {atan}\left (\frac {\sqrt {d}\,x}{\sqrt {c}}\right )}{c^{5/2}}+\frac {b^2\,\mathrm {atan}\left (\frac {\sqrt {d}\,x}{\sqrt {c}}\right )}{\sqrt {c}\,\sqrt {d}}-\frac {2\,a\,b}{c\,x}-\frac {2\,a\,b\,\sqrt {d}\,\mathrm {atan}\left (\frac {\sqrt {d}\,x}{\sqrt {c}}\right )}{c^{3/2}} \]
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