has a critical point at (1,5) and an inflection point at (2,3). f(x)=x^3+ax^2+bx+c Thanks!
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Originally Posted by citcat has a critical point at (1,5) and an inflection point at (2,3). f(x)=x^3+ax^2+bx+c Well you know that: $\displaystyle f(1)=5~\&~f(2)=3$ , $\displaystyle f'(1)=0~\&~f''(2)=0.$
Thanks! I accidentally used the first derivative for the point of inflection instead of the second.
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