The Value of the Derivative at Relative Extrema In Exercises 5-10, find the value of the derivative (if it exists) at each indicated extremum. X2 5. f ( x) = x2 + 4 N x -2 (0, 0) 1 2 - 1 -2 7. g( x) = x + a 5 -+ 3+ 2 - (2, 3) 12 60) 3 2 - 6 9. f (x ) = (x+ 2) 2/3 10. 2 - 6 0. (-2, 0) 1 - X -4 - 3 -2 -1 -2 -2