Hãy xác định x ( n ) biết X ( e j ω ) = e − j ω , n 0 trong khoảng − ω c ≤ ω ≤ ω c

$\text{x}\left(\text{n}\right)=\frac{\text{s}\text{i}\text{n}\omega {}_c\left(n-n{}_0\right)}{\pi \left(n-n{}_0\right)}$

$\text{c}\text{o}\text{s}\pi \left(n-n{}_0\right)$

$\text{x}\left(\text{n}\right)=\frac{\text{s}\text{i}\text{n}\omega {}_{c}n}{\pi n}$

$\text{x}\left(\text{n}\right)=\text{s}\text{i}\text{n}\pi \left(n-n{}_0\right)$