Question 910736
f(x)=2x^3+x^2-24x+5
f' = 6x^2 + 2x - 24
f" = 12x + 2
12x + 2 = 0, x = -1/6
Inflection point is (-1/6, f(-1/6))
{{{drawing(300,300,   -5,5,-10,20,   
 grid(1),
circle(-1/6,9.0185 ,0.2),
graph( 300, 300, -5,5,-10,20,0, 2x^3 + x^2 - 24x+5))}}}