1.

The Fourier transform of the signal u(t+1) 2u(t) + u(t-1) is ____________

A. ( frac{2 sin u2061 -2}{j } )
B. ( frac{2 cos u2061 -2}{j } )
C. ( frac{2 cos u2061 +2}{j } )
D. ( frac{2 sin u2061 +2}{j } )
Answer» C. ( frac{2 cos u2061 +2}{j } )


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