Identify the local maximums for the function shown? A)
(2, -3) and (1,2)
B)
(-3.2) and (2.1)
C)
(-1, -3) and (4, -1)
D)
(-3,-1) and (-1.4)

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).