A real-valued signal 𝑥(𝑡) is known to be uniquely determined by its samples when the sampling frequency is 𝜔𝑠 = 1000𝜋. For what values of 𝜔 is 𝑋(𝜔) guaranteed to be zero?
ECE481 Image Processing (Spring 2023) Homework #1 (Due date: Feb 2, 2023) • Reading assignment: Chap. 1, 2 1. (10 pts) Consider a discrete-time system with input 𝑥[𝑛] and output 𝑦[𝑛] related by 𝑦[𝑛] = 𝑛𝑥[𝑛]. (a) (5 pts) Is this system linear? Justify your answer. (b) (5 pts) Is this system time-invariant? Justify your […]