Integrand size = 14, antiderivative size = 45 \[ \int \frac {1}{x+\sqrt {1+x+x^2}} \, dx=-x+\sqrt {1+x+x^2}-\frac {3}{2} \text {arcsinh}\left (\frac {1+2 x}{\sqrt {3}}\right )+2 \log \left (x+\sqrt {1+x+x^2}\right ) \]
[Out]
Time = 0.02 (sec) , antiderivative size = 59, normalized size of antiderivative = 1.31, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {2141, 907} \[ \int \frac {1}{x+\sqrt {1+x+x^2}} \, dx=\frac {3}{2 \left (2 \left (\sqrt {x^2+x+1}+x\right )+1\right )}+2 \log \left (\sqrt {x^2+x+1}+x\right )-\frac {3}{2} \log \left (2 \left (\sqrt {x^2+x+1}+x\right )+1\right ) \]
[In]
[Out]
Rule 907
Rule 2141
Rubi steps \begin{align*} \text {integral}& = 2 \text {Subst}\left (\int \frac {1+x+x^2}{x (1+2 x)^2} \, dx,x,x+\sqrt {1+x+x^2}\right ) \\ & = 2 \text {Subst}\left (\int \left (\frac {1}{x}-\frac {3}{2 (1+2 x)^2}-\frac {3}{2 (1+2 x)}\right ) \, dx,x,x+\sqrt {1+x+x^2}\right ) \\ & = \frac {3}{2 \left (1+2 \left (x+\sqrt {1+x+x^2}\right )\right )}+2 \log \left (x+\sqrt {1+x+x^2}\right )-\frac {3}{2} \log \left (1+2 \left (x+\sqrt {1+x+x^2}\right )\right ) \\ \end{align*}
Time = 0.13 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.20 \[ \int \frac {1}{x+\sqrt {1+x+x^2}} \, dx=-x+\sqrt {1+x+x^2}+2 \log \left (-2-x+\sqrt {1+x+x^2}\right )-\frac {1}{2} \log \left (-1-2 x+2 \sqrt {1+x+x^2}\right ) \]
[In]
[Out]
Time = 0.08 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.16
method | result | size |
default | \(\sqrt {\left (1+x \right )^{2}-x}-\frac {\operatorname {arcsinh}\left (\frac {2 \sqrt {3}\, \left (x +\frac {1}{2}\right )}{3}\right )}{2}-\operatorname {arctanh}\left (\frac {1-x}{2 \sqrt {\left (1+x \right )^{2}-x}}\right )-x +\ln \left (1+x \right )\) | \(52\) |
trager | \(\sqrt {x^{2}+x +1}-x -\frac {\ln \left (\frac {2 x^{2} \sqrt {x^{2}+x +1}+2 x^{3}+8 x \sqrt {x^{2}+x +1}+9 x^{2}+14 \sqrt {x^{2}+x +1}+12 x +13}{\left (1+x \right )^{4}}\right )}{2}\) | \(71\) |
[In]
[Out]
none
Time = 0.25 (sec) , antiderivative size = 63, normalized size of antiderivative = 1.40 \[ \int \frac {1}{x+\sqrt {1+x+x^2}} \, dx=-x + \sqrt {x^{2} + x + 1} + \log \left (x + 1\right ) - \log \left (-x + \sqrt {x^{2} + x + 1}\right ) + \log \left (-x + \sqrt {x^{2} + x + 1} - 2\right ) + \frac {1}{2} \, \log \left (-2 \, x + 2 \, \sqrt {x^{2} + x + 1} - 1\right ) \]
[In]
[Out]
\[ \int \frac {1}{x+\sqrt {1+x+x^2}} \, dx=\int \frac {1}{x + \sqrt {x^{2} + x + 1}}\, dx \]
[In]
[Out]
\[ \int \frac {1}{x+\sqrt {1+x+x^2}} \, dx=\int { \frac {1}{x + \sqrt {x^{2} + x + 1}} \,d x } \]
[In]
[Out]
none
Time = 0.28 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.47 \[ \int \frac {1}{x+\sqrt {1+x+x^2}} \, dx=-x + \sqrt {x^{2} + x + 1} + \frac {1}{2} \, \log \left (-2 \, x + 2 \, \sqrt {x^{2} + x + 1} - 1\right ) + \log \left ({\left | x + 1 \right |}\right ) - \log \left ({\left | -x + \sqrt {x^{2} + x + 1} \right |}\right ) + \log \left ({\left | -x + \sqrt {x^{2} + x + 1} - 2 \right |}\right ) \]
[In]
[Out]
Timed out. \[ \int \frac {1}{x+\sqrt {1+x+x^2}} \, dx=\ln \left (x+1\right )-x+\int \frac {\sqrt {x^2+x+1}}{x+1} \,d x \]
[In]
[Out]