Let F(X) = Ax? +18x2 +15x-7. Find A Such That F(X) Has A Point Of Inflection When X= -2 It Is Possible For F(X) To Have A Critical Value At X=C, But F(C) Is Neither A Relative Maximum Nor A Relative Minimum.

 

Let f(x)=Ax3+18x2 +15x-7. Find A such that f(x) has a point of inflection when x = -2. I