And Because the spectrum of a discrete time sign, this same spectrum will periodically repeat if we extended the frequency greater over and above $f_s$ such the spectrum shown can be precisely the same spectrum in just about every frequency band from $nf_s$ to $(n+one)f_s$ for almost any integer $n$. https://3bhkflatonrentingurugram.blogspot.com/2025/07/book-spacious-boys-pg-in-sector-15-part.html