Integrand size = 18, antiderivative size = 36 \[ \int \frac {1}{x \sqrt {-2+5 x+3 x^2}} \, dx=-\frac {\arctan \left (\frac {4-5 x}{2 \sqrt {2} \sqrt {-2+5 x+3 x^2}}\right )}{\sqrt {2}} \]
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Time = 0.01 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.111, Rules used = {738, 210} \[ \int \frac {1}{x \sqrt {-2+5 x+3 x^2}} \, dx=-\frac {\arctan \left (\frac {4-5 x}{2 \sqrt {2} \sqrt {3 x^2+5 x-2}}\right )}{\sqrt {2}} \]
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Rule 210
Rule 738
Rubi steps \begin{align*} \text {integral}& = -\left (2 \text {Subst}\left (\int \frac {1}{-8-x^2} \, dx,x,\frac {-4+5 x}{\sqrt {-2+5 x+3 x^2}}\right )\right ) \\ & = -\frac {\tan ^{-1}\left (\frac {4-5 x}{2 \sqrt {2} \sqrt {-2+5 x+3 x^2}}\right )}{\sqrt {2}} \\ \end{align*}
Time = 0.06 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.97 \[ \int \frac {1}{x \sqrt {-2+5 x+3 x^2}} \, dx=-\sqrt {2} \arctan \left (\frac {\sqrt {-2+5 x+3 x^2}}{\sqrt {2} (-1+3 x)}\right ) \]
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Time = 0.25 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.81
method | result | size |
default | \(\frac {\sqrt {2}\, \arctan \left (\frac {\left (-4+5 x \right ) \sqrt {2}}{4 \sqrt {3 x^{2}+5 x -2}}\right )}{2}\) | \(29\) |
trager | \(-\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+2\right ) \ln \left (\frac {5 \operatorname {RootOf}\left (\textit {\_Z}^{2}+2\right ) x -4 \operatorname {RootOf}\left (\textit {\_Z}^{2}+2\right )+4 \sqrt {3 x^{2}+5 x -2}}{x}\right )}{2}\) | \(46\) |
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Time = 0.35 (sec) , antiderivative size = 28, normalized size of antiderivative = 0.78 \[ \int \frac {1}{x \sqrt {-2+5 x+3 x^2}} \, dx=\frac {1}{2} \, \sqrt {2} \arctan \left (\frac {\sqrt {2} {\left (5 \, x - 4\right )}}{4 \, \sqrt {3 \, x^{2} + 5 \, x - 2}}\right ) \]
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\[ \int \frac {1}{x \sqrt {-2+5 x+3 x^2}} \, dx=\int \frac {1}{x \sqrt {\left (x + 2\right ) \left (3 x - 1\right )}}\, dx \]
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Time = 0.29 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.56 \[ \int \frac {1}{x \sqrt {-2+5 x+3 x^2}} \, dx=\frac {1}{2} \, \sqrt {2} \arcsin \left (\frac {5 \, x}{7 \, {\left | x \right |}} - \frac {4}{7 \, {\left | x \right |}}\right ) \]
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Time = 0.27 (sec) , antiderivative size = 30, normalized size of antiderivative = 0.83 \[ \int \frac {1}{x \sqrt {-2+5 x+3 x^2}} \, dx=\sqrt {2} \arctan \left (-\frac {1}{2} \, \sqrt {2} {\left (\sqrt {3} x - \sqrt {3 \, x^{2} + 5 \, x - 2}\right )}\right ) \]
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Time = 0.35 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.94 \[ \int \frac {1}{x \sqrt {-2+5 x+3 x^2}} \, dx=\frac {\sqrt {2}\,\ln \left (\frac {5\,x-4+\sqrt {2}\,\sqrt {3\,x^2+5\,x-2}\,2{}\mathrm {i}}{x}\right )\,1{}\mathrm {i}}{2} \]
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