Hi all!
Can someone help me with this exercise? I don't know how to start
Calculate the equation in finite differences of:
14x[n]-9x[n-1]+x[n-2]=70delta[n+3]-10delta[n+2]
Thanks in advance
Greetings
First, realize that by definition. So, substitute:
The way recursive formulas are defined is by relating to a formula involving several values for , so we want to isolate the x with the highest subscript, in this case, .
More formally,
for all
Therefore, to actually find the terms in this sequence, we would need to know the first six values of the sequence.