Wiley signals and systems e book TLFe BO 521

-506

Appendix A. Solutions t o the Exercises

Solution 11.8

X(:pj

(T )= 27r
W

= iLL

Fourier series:

77

S(w

-

27rk)

k

X ( J W )=

A,,elTop'"
P

( h c a u s r of t h e selectivc property of thc inipulsc at w = 0)

Solution 11.9
a)

Z(t)
0

I

=

si(7rt) .si(7rt)