DTFT question Find the output signal? need solution

[ahmadaltaan]

DTFT question

x=2cos(0.5n), H(Ω)=(1+2cos(2Ω))exp(-j2Ω). Find the output signal?

I need solution to this problem. Can anyone help me?

 

[xulfee]

DTFT question

convert x(t) to X(Ω),multiply with H(Ω) u'll get Y(Ω)

Added after 21 seconds:

is there any problem in solving this?????

 

[ahmadaltaan]

Re: DTFT question

I know that but I want mathematical solution (step by step).

Thanks

 

[xulfee]

DTFT question

ok let me do it,then i'll send u the scaned copy of it