And as the spectrum of a discrete time sign, this similar spectrum will periodically repeat if we extended the frequency greater past $f_s$ this kind of that the spectrum demonstrated is also exactly the same spectrum in just about every frequency band from $nf_s$ to $(n+1)f_s$ for almost any integer https://pggirlsingurugram.blogspot.com/2025/07/modern-boys-pg-in-gurgaon-sector-15.html