Posted by mike9 on Friday, March 1, 2013 at 8:16pm.
Use the second derivative to determine the point of inflection for y = x3 – x2 – 8x + 12. ????

calculus  Dr. Jane, Saturday, March 2, 2013 at 9:49am
3x^22x8 first derivative
6x  2 2nd derivative
6x2 =0 find x and then substitute into the original equation to find y.