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The value of z(ak u[-k]) is _______________

Posted: Thu Jul 14, 2022 11:09 am
by answerhappygod
a) \(\frac{z}{z-a}\)
b) \(\frac{z}{a-z}\)
c) \(\frac{z^2}{z-a}\)
d) \(\frac{a}{a-z}\)