An digital filter that approximates a differentiator has the ideal magnitude response |Hd(ω)| = |ω|, −π < ω < π. Using the window method with a Hamming window, design a length M = 21 filter to approximate this response. Determine the impulse response h(n), and compute and plot the magnitude and phase response of the filter?

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers

the answer is 5/14.

hope this .

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation: