Integrand size = 16, antiderivative size = 57 \[ \int \frac {x}{\sqrt {2+5 x+3 x^2}} \, dx=\frac {1}{3} \sqrt {2+5 x+3 x^2}-\frac {5 \text {arctanh}\left (\frac {5+6 x}{2 \sqrt {3} \sqrt {2+5 x+3 x^2}}\right )}{6 \sqrt {3}} \]
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Time = 0.01 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.188, Rules used = {654, 635, 212} \[ \int \frac {x}{\sqrt {2+5 x+3 x^2}} \, dx=\frac {1}{3} \sqrt {3 x^2+5 x+2}-\frac {5 \text {arctanh}\left (\frac {6 x+5}{2 \sqrt {3} \sqrt {3 x^2+5 x+2}}\right )}{6 \sqrt {3}} \]
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Rule 212
Rule 635
Rule 654
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} \sqrt {2+5 x+3 x^2}-\frac {5}{6} \int \frac {1}{\sqrt {2+5 x+3 x^2}} \, dx \\ & = \frac {1}{3} \sqrt {2+5 x+3 x^2}-\frac {5}{3} \text {Subst}\left (\int \frac {1}{12-x^2} \, dx,x,\frac {5+6 x}{\sqrt {2+5 x+3 x^2}}\right ) \\ & = \frac {1}{3} \sqrt {2+5 x+3 x^2}-\frac {5 \tanh ^{-1}\left (\frac {5+6 x}{2 \sqrt {3} \sqrt {2+5 x+3 x^2}}\right )}{6 \sqrt {3}} \\ \end{align*}
Time = 0.10 (sec) , antiderivative size = 51, normalized size of antiderivative = 0.89 \[ \int \frac {x}{\sqrt {2+5 x+3 x^2}} \, dx=\frac {1}{9} \left (3 \sqrt {2+5 x+3 x^2}-5 \sqrt {3} \text {arctanh}\left (\frac {\sqrt {\frac {2}{3}+\frac {5 x}{3}+x^2}}{1+x}\right )\right ) \]
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Time = 0.25 (sec) , antiderivative size = 45, normalized size of antiderivative = 0.79
method | result | size |
default | \(\frac {\sqrt {3 x^{2}+5 x +2}}{3}-\frac {5 \ln \left (\frac {\left (\frac {5}{2}+3 x \right ) \sqrt {3}}{3}+\sqrt {3 x^{2}+5 x +2}\right ) \sqrt {3}}{18}\) | \(45\) |
risch | \(\frac {\sqrt {3 x^{2}+5 x +2}}{3}-\frac {5 \ln \left (\frac {\left (\frac {5}{2}+3 x \right ) \sqrt {3}}{3}+\sqrt {3 x^{2}+5 x +2}\right ) \sqrt {3}}{18}\) | \(45\) |
trager | \(\frac {\sqrt {3 x^{2}+5 x +2}}{3}-\frac {5 \operatorname {RootOf}\left (\textit {\_Z}^{2}-3\right ) \ln \left (6 \operatorname {RootOf}\left (\textit {\_Z}^{2}-3\right ) x +6 \sqrt {3 x^{2}+5 x +2}+5 \operatorname {RootOf}\left (\textit {\_Z}^{2}-3\right )\right )}{18}\) | \(57\) |
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Time = 0.31 (sec) , antiderivative size = 53, normalized size of antiderivative = 0.93 \[ \int \frac {x}{\sqrt {2+5 x+3 x^2}} \, dx=\frac {5}{36} \, \sqrt {3} \log \left (-4 \, \sqrt {3} \sqrt {3 \, x^{2} + 5 \, x + 2} {\left (6 \, x + 5\right )} + 72 \, x^{2} + 120 \, x + 49\right ) + \frac {1}{3} \, \sqrt {3 \, x^{2} + 5 \, x + 2} \]
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Time = 0.30 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.86 \[ \int \frac {x}{\sqrt {2+5 x+3 x^2}} \, dx=\frac {\sqrt {3 x^{2} + 5 x + 2}}{3} - \frac {5 \sqrt {3} \log {\left (6 x + 2 \sqrt {3} \sqrt {3 x^{2} + 5 x + 2} + 5 \right )}}{18} \]
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Time = 0.27 (sec) , antiderivative size = 43, normalized size of antiderivative = 0.75 \[ \int \frac {x}{\sqrt {2+5 x+3 x^2}} \, dx=-\frac {5}{18} \, \sqrt {3} \log \left (2 \, \sqrt {3} \sqrt {3 \, x^{2} + 5 \, x + 2} + 6 \, x + 5\right ) + \frac {1}{3} \, \sqrt {3 \, x^{2} + 5 \, x + 2} \]
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Time = 0.27 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.86 \[ \int \frac {x}{\sqrt {2+5 x+3 x^2}} \, dx=\frac {5}{18} \, \sqrt {3} \log \left ({\left | -2 \, \sqrt {3} {\left (\sqrt {3} x - \sqrt {3 \, x^{2} + 5 \, x + 2}\right )} - 5 \right |}\right ) + \frac {1}{3} \, \sqrt {3 \, x^{2} + 5 \, x + 2} \]
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Time = 10.13 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.77 \[ \int \frac {x}{\sqrt {2+5 x+3 x^2}} \, dx=\frac {\sqrt {3\,x^2+5\,x+2}}{3}-\frac {5\,\sqrt {3}\,\ln \left (\sqrt {3\,x^2+5\,x+2}+\frac {\sqrt {3}\,\left (3\,x+\frac {5}{2}\right )}{3}\right )}{18} \]
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