1. [-/1 Points] DETAILS LARCALCET7 4.1.005. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find the value of the derivative (if it exists) at the indicated extremum. (If an answer does not exist, enter DNE.) f( x ) = - X2 x2 + 4 f'(0) = -2 (0,0) Need Help? Read it Watch It 2. [-/1 Points] DETAILS LARCALCET7 4.1.008.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find the value of the derivative (if it exists) at the indicated extremum. (If an answer does not exist, enter DNE.) (-2, 2V3 A( x ) = - 3xVx + 1 F ( = ) =[ -2 N Need Help? Read it Watch It Master It3. [-11 Points] DETAILS LARCALCET7 4.1.010, Find the value 0f the derivative (if it exists) at the indicated extremum. (If an answer does not exist, enter DNE.) W) = 4 7 i>