Question 840495
I think you mean critical point where {{{df/dx=0}}}
{{{f=x^3-3x^2+2x+2}}}
{{{df/dx=3x^2-6x+2=0}}}
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{x = (-(-6)+- sqrt( (-6)^2-4*3*2 ))/(2*3) }}} 
{{{x = (6+- sqrt( 36-24 ))/(6) }}}
{{{x = (6+- sqrt( 12 ))/(6) }}}
{{{x = (6+- 2*sqrt(3))/(6) }}}
{{{x = 1+- sqrt(3 )/3 }}}