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

MCQOPTIONS

1.	What is the z-transform of the signal x(n)=[5(3n)-9(7n)]u(n)?
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
Answer» B. \(\frac{5}{1+3z^{-1}}-\frac{9}{1+7z^{-1}}\)

Discussion

No Comment Found

Related MCQs

What is the z-transform of the signal x(n)=[5(3n)-9(7n)]u(n)?
What is the z-transform of the signal defined as x(n)=u(n)-u(n+N)?
What is the z-transform of the signal x(n)=cos(jω0n)u(n)?
If x1(n)={1,2,3} and x2(n)={1,1,1}, then what is the convolution sequence of the given two signals?
What is the signal whose z-transform is given as X(z)=\(\frac{1}{2πj} \oint X_1 (v) X_2 (\frac{z}{v})v^{-1} dv\)?
If x(n) is an imaginary sequence, then the z-transform of the real part of the sequence is?
If X(z) is the z-transform of the signal x(n), then what is the z-transform of x*(n)?
If Z{x(n)}=X(z) and the poles of X(z) are all inside the unit circle, then the final value of x(n) as \(n\rightarrow\infty\) is given by i.e., \(\lim_{n\rightarrow\infty}\)x(n)=?
If x(n) is causal, then \(\lim_{z\rightarrow\infty}\) X(z)=?
If Z{x1(n)}=X1(z) and Z{x2(n)}=X2(z) then what is the z-transform of correlation between the two signals?