3015_Midterm_Solutions

3015_Midterm_Solutions - University of Minnesota Dept of...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: University of Minnesota Dept. of Electrical and Computer Engineering EE3015 – Signals and Systems Midterm Solutions November 6, 2009 1. (15 Pts.) Consider a system with input x ( t ) and output y ( t ). Answer the following questions (just mark YES or NO) a) Does the system ) 2 ( ) ( t x t y = have memory? X YES  NO b) Is the system ) ( ) 1 cos( ) ( t x t t y + = stable? X YES  NO c) Is the system ) ( ) ( 2 t x t t y = time-invariant?  YES X NO 2. (10 Pts.) Consider a Linear Time-Invariant system with impulse response ] [ n h . Answer the following questions (just mark YES or NO) a) If ∑ ∞ −∞ = − = k k n n h ] 3 [ ] [ δ , is the system causal?  YES X NO b) If ] 4 [ ] 3 [ ] [ − − + = n u n u n h , is the system stable? X YES  NO 3. (25 Pts) Calculate the Discrete-Time convolution of ] 1 [ 3 1 ] [ ] 1 [ ] [ 1 + ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ = − = + n u n h n u n x n We first graph x [ n ] and h [ n ] OPTION 1: We graph x [ k ] and h [ n- k ] Next we multiply both...
View Full Document

This note was uploaded on 12/20/2009 for the course EE 3015 taught by Professor Staff during the Fall '08 term at Minnesota.

Page1 / 5

3015_Midterm_Solutions - University of Minnesota Dept of...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online