1.

If x(n)=xR(n)+jxI(n) is a complex sequence whose Fourier transform is given as X(ω)=XR(ω)+jXI(ω), then what is the value of XR(ω)?

A. \(\sum_{n=0}^∞\)xR (n)cosωn-xI (n)sinωn
B. \(\sum_{n=0}^∞\)xR (n)cosωn+xI (n)sinωn
C. \(\sum_{n=-∞}^∞\)xR (n)cosωn+xI (n)sinωn
D. \(\sum_{n=-∞}^∞\)xR (n)cosωn-xI (n)sinωn
Answer» D. \(\sum_{n=-∞}^∞\)xR (n)cosωn-xI (n)sinωn


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