Determine All Maximum and Minimum Values of F(x) = - $x ^ { 3 }$

Short Answer

Determine all maximum and minimum values of f(x) = - $x ^ { 3 }$ + 3 $x ^ { 2 }$ + 9x - 1 on $- 2 \leq x \leq 2 .$ Enter your answer exactly as: a,b both integers where a is the minimum of f and b is the maximum of f.