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What is the z-transform of the signal x(n)=[5(3n)-9(7n)]u(n)?

Posted: Thu Jul 14, 2022 9:44 am
by answerhappygod
a) \(\frac{5}{1-3z^{-1}}-\frac{9}{1-7z^{-1}}\)
b) \(\frac{5}{1+3z^{-1}}-\frac{9}{1+7z^{-1}}\)
c) \(\frac{5}{1-3z}-\frac{9}{1-7z}\)
d) None of the mentioned