I used the cov function in R2009b and in R2010a and it returned different results.
I am aware of the fact that there are multiple functions named cov in Matlab, depending on your toolboxes; both functions are in the directory matlab/datafun
The revision date on both functions is $Revision: 188.8.131.52 $ $Date: 2009/03/16 22:17:40 $.
What could be producing this discrepancy?
edit: R2009b is on a Mac (OS X 10.5.8); R2010a is on a PC (7).