Question: A function is defined by f(x)=ax^3+bx^2+cx+d A) find the values of a, b,c and d if f(x) has a point of inflection ar (0,2) and

A function is defined by f(x)=ax^3+bx^2+cx+d A) find the values of a, b,c and d if f(x) has a point of inflection ar (0,2) and a local maximum at (2,6). B) explain how it is known there must be a local minimum using second derivative to prove it

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