electric potential in a circuit is given by V(t) = − 5 sin(3t)

Question

electric potential in a circuit is given by

V(t) = − 5 sin(3t)

with V in volts and t in seconds. Compute the rate of change of V at the instant t = 1 second. Your answer must be accurate to one decimal place.

V '(1) = 

Answer 1

dV/dt = -15cos3t and -15cos(3)=-1.5