Integrand size = 20, antiderivative size = 71 \[ \int \frac {c+d x^2}{x^2 \left (a+b x^2\right )^2} \, dx=-\frac {c}{a^2 x}-\frac {(b c-a d) x}{2 a^2 \left (a+b x^2\right )}-\frac {(3 b c-a d) \arctan \left (\frac {\sqrt {b} x}{\sqrt {a}}\right )}{2 a^{5/2} \sqrt {b}} \]
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Time = 0.04 (sec) , antiderivative size = 71, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.150, Rules used = {467, 464, 211} \[ \int \frac {c+d x^2}{x^2 \left (a+b x^2\right )^2} \, dx=-\frac {\arctan \left (\frac {\sqrt {b} x}{\sqrt {a}}\right ) (3 b c-a d)}{2 a^{5/2} \sqrt {b}}-\frac {x (b c-a d)}{2 a^2 \left (a+b x^2\right )}-\frac {c}{a^2 x} \]
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Rule 211
Rule 464
Rule 467
Rubi steps \begin{align*} \text {integral}& = -\frac {(b c-a d) x}{2 a^2 \left (a+b x^2\right )}-\frac {1}{2} \int \frac {-\frac {2 c}{a}+\frac {(b c-a d) x^2}{a^2}}{x^2 \left (a+b x^2\right )} \, dx \\ & = -\frac {c}{a^2 x}-\frac {(b c-a d) x}{2 a^2 \left (a+b x^2\right )}-\frac {(3 b c-a d) \int \frac {1}{a+b x^2} \, dx}{2 a^2} \\ & = -\frac {c}{a^2 x}-\frac {(b c-a d) x}{2 a^2 \left (a+b x^2\right )}-\frac {(3 b c-a d) \tan ^{-1}\left (\frac {\sqrt {b} x}{\sqrt {a}}\right )}{2 a^{5/2} \sqrt {b}} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 70, normalized size of antiderivative = 0.99 \[ \int \frac {c+d x^2}{x^2 \left (a+b x^2\right )^2} \, dx=-\frac {c}{a^2 x}+\frac {(-b c+a d) x}{2 a^2 \left (a+b x^2\right )}+\frac {(-3 b c+a d) \arctan \left (\frac {\sqrt {b} x}{\sqrt {a}}\right )}{2 a^{5/2} \sqrt {b}} \]
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Time = 2.68 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.85
method | result | size |
default | \(-\frac {c}{a^{2} x}+\frac {\frac {\left (\frac {a d}{2}-\frac {b c}{2}\right ) x}{b \,x^{2}+a}+\frac {\left (a d -3 b c \right ) \arctan \left (\frac {b x}{\sqrt {a b}}\right )}{2 \sqrt {a b}}}{a^{2}}\) | \(60\) |
risch | \(\frac {\frac {\left (a d -3 b c \right ) x^{2}}{2 a^{2}}-\frac {c}{a}}{x \left (b \,x^{2}+a \right )}-\frac {\ln \left (-\sqrt {-a b}\, x +a \right ) d}{4 \sqrt {-a b}\, a}+\frac {3 \ln \left (-\sqrt {-a b}\, x +a \right ) b c}{4 \sqrt {-a b}\, a^{2}}+\frac {\ln \left (-\sqrt {-a b}\, x -a \right ) d}{4 \sqrt {-a b}\, a}-\frac {3 \ln \left (-\sqrt {-a b}\, x -a \right ) b c}{4 \sqrt {-a b}\, a^{2}}\) | \(140\) |
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Time = 0.25 (sec) , antiderivative size = 214, normalized size of antiderivative = 3.01 \[ \int \frac {c+d x^2}{x^2 \left (a+b x^2\right )^2} \, dx=\left [-\frac {4 \, a^{2} b c + 2 \, {\left (3 \, a b^{2} c - a^{2} b d\right )} x^{2} - {\left ({\left (3 \, b^{2} c - a b d\right )} x^{3} + {\left (3 \, a b c - a^{2} d\right )} x\right )} \sqrt {-a b} \log \left (\frac {b x^{2} - 2 \, \sqrt {-a b} x - a}{b x^{2} + a}\right )}{4 \, {\left (a^{3} b^{2} x^{3} + a^{4} b x\right )}}, -\frac {2 \, a^{2} b c + {\left (3 \, a b^{2} c - a^{2} b d\right )} x^{2} + {\left ({\left (3 \, b^{2} c - a b d\right )} x^{3} + {\left (3 \, a b c - a^{2} d\right )} x\right )} \sqrt {a b} \arctan \left (\frac {\sqrt {a b} x}{a}\right )}{2 \, {\left (a^{3} b^{2} x^{3} + a^{4} b x\right )}}\right ] \]
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Time = 0.26 (sec) , antiderivative size = 114, normalized size of antiderivative = 1.61 \[ \int \frac {c+d x^2}{x^2 \left (a+b x^2\right )^2} \, dx=- \frac {\sqrt {- \frac {1}{a^{5} b}} \left (a d - 3 b c\right ) \log {\left (- a^{3} \sqrt {- \frac {1}{a^{5} b}} + x \right )}}{4} + \frac {\sqrt {- \frac {1}{a^{5} b}} \left (a d - 3 b c\right ) \log {\left (a^{3} \sqrt {- \frac {1}{a^{5} b}} + x \right )}}{4} + \frac {- 2 a c + x^{2} \left (a d - 3 b c\right )}{2 a^{3} x + 2 a^{2} b x^{3}} \]
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Time = 0.29 (sec) , antiderivative size = 65, normalized size of antiderivative = 0.92 \[ \int \frac {c+d x^2}{x^2 \left (a+b x^2\right )^2} \, dx=-\frac {{\left (3 \, b c - a d\right )} x^{2} + 2 \, a c}{2 \, {\left (a^{2} b x^{3} + a^{3} x\right )}} - \frac {{\left (3 \, b c - a d\right )} \arctan \left (\frac {b x}{\sqrt {a b}}\right )}{2 \, \sqrt {a b} a^{2}} \]
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Time = 0.28 (sec) , antiderivative size = 64, normalized size of antiderivative = 0.90 \[ \int \frac {c+d x^2}{x^2 \left (a+b x^2\right )^2} \, dx=-\frac {{\left (3 \, b c - a d\right )} \arctan \left (\frac {b x}{\sqrt {a b}}\right )}{2 \, \sqrt {a b} a^{2}} - \frac {3 \, b c x^{2} - a d x^{2} + 2 \, a c}{2 \, {\left (b x^{3} + a x\right )} a^{2}} \]
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Time = 4.98 (sec) , antiderivative size = 61, normalized size of antiderivative = 0.86 \[ \int \frac {c+d x^2}{x^2 \left (a+b x^2\right )^2} \, dx=\frac {\mathrm {atan}\left (\frac {\sqrt {b}\,x}{\sqrt {a}}\right )\,\left (a\,d-3\,b\,c\right )}{2\,a^{5/2}\,\sqrt {b}}-\frac {\frac {c}{a}-\frac {x^2\,\left (a\,d-3\,b\,c\right )}{2\,a^2}}{b\,x^3+a\,x} \]
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