And Because the spectrum of the discrete time sign, this similar spectrum will periodically repeat if we prolonged the frequency greater beyond $f_s$ this sort of which the spectrum revealed is likewise a similar spectrum in each and every frequency band from $nf_s$ to $(n+1)f_s$ for almost any integer $n$. https://girlspgingurgaonsector15.blogspot.com/2025/07/well-maintained-boys-pg-in-gurgaon.html