- 05:46, 7 September 2011 (diff | hist) . . (-1) . . Practice summation n delta of n ECE438F11
- 05:43, 7 September 2011 (diff | hist) . . (+223) . . Practice summation n delta of n ECE438F11
- 05:31, 7 September 2011 (diff | hist) . . (+74) . . Practice writing equations ECE438F11