[18335fall08] pset6 errata, Athena dialup

[Steven G. Johnson]

Hi gang,

On problem 1, in the last sentence defining a "convex set", there is a  
typo: there are two x's instead of an x and a y.

Also, problem "3" should be problem "2".

The updated pset6.pdf is posted on the course page (math.mit.edu/ 
~stevenj/18.335/pset6.pdf).

Also, for those of you who want to do the problem set via Athena  
"dialup" (i.e. ssh): you *cannot* use athena.dialup.mit.edu or  
x.dialup.mit.edu, because those are Sun Solaris machines, and I only  
compiled the NLopt plugin for Linux/x86. A usable dialup machine is  
linux.mit.edu  (or you can go to an Athena cluster).

--SGJ