This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: BME 311 EXAM #1 February 16, 2006 Show all work in your blue book. Please start each problem on a new page, and clearly indicate your answers. Write and sign the honor pledge on the cover of your blue book: I have neither given nor received unauthorized aid on this exam, nor have I concealed any violations of the Honor Code. This test is closed-book and closed-note. Calculators are allowed. 1.  For each of the system input-output (I-O) relationships shown, determine whether the system is (i) linear, and (ii) time-invariant. As usual, x denotes the continuous-time (CT) or discrete-time (DT) input, and y denotes the CT or DT output. (a) y ( t ) = sin( x ( t )) (b) y [ n ] = n k =- x [ k- 1] (c) y ( t ) = d 2 d t 2 x ( t ) (d) y [ n ] = ln( | x [ n ] | ) 2.  The signals acquired in ultrasound and magnetic resonance imaging are generally radio frequency (RF) signals ( 1100 MHz). However, the image information in these signals is at a much lower frequency (...
View Full Document
- Winter '06