Find all possible ROCs for the following z-transforms and determine the associated inverse ztransform for each case. (a) z 2 − 2z z 2 + 4z + 3 (b) 1 (1 − 1 2 z−1)(1 − 1 3 z−1)

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

were is the equation

9 x 8 divided by (5-3)=36

b. 18

step-by-step explanation:

so the equation for this is:

ab^2=ac⋅ad

ab being the top length of 6 and ac being the length of 2 and ad being the length of x. let's plug into the equation:

6^2 = 2x

now lets just solve for x:

36 = 2x

18 = x

i hope that !