Grading format:
Similar to the grading format of HW1, HW2 is graded for completeness as well as theoretical understanding of course material.

Correction to original solution Q3:
The graph for x[n-k] should be 0 at n, and 1's from n+1 to n+10
The correct solution (as Kim described) is as follows:
y[n]=0 for n<-10
y[n]=n+11 for -10<=n<=-1
y[n]=9-n for 0<=n<=8
y[n]=0 for n>8

- In Q2, $ (-1)^n = e^{j\pi n} $.
- When computing the DTFT using the summation formula, note that some expressions are in the form of geometric series.
- In Q3, convolution must be separated into various cases. The analytical expression will vary depending on the case. Also, drawing the signals is very helpful.

Alumni Liaison

Ph.D. 2007, working on developing cool imaging technologies for digital cameras, camera phones, and video surveillance cameras.

Buyue Zhang