Consider the following function for t ≥ 0, y=exp(-3*t)*cos(kx-9*t+0.8)

(a) The derivative dy/dt (at fixed k and x) =

(b) At t=0, the maximum value of y =

(c) At t=0, the minimum value of y =

(e) For x=0, at what t closest to zero is dy/dt=0? t =

can you hlep me do homework?

step-by-step explanation:

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

b. x- 48 =120

step-by-step explanation: