Thread: Kindly tell me which option is correct and what is reason for that

Kindly tell me which option is correct and what is reason for that

Why not try and see what you come up with.

so option (b) is correct

Am i right

Why post here if you ignore the responses? Danny suggested you try x(t)= 0. That would give, of course, for all k. And y(t)= 1 so while for all k> 0. That does not match "b".