deletions | additions       diff --git a/q3.tex b/q3.tex  index 30fff5b..a4c4138 100644  --- a/q3.tex  +++ b/q3.tex 
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Let's call our two sets be call $A$ and $B$. If we are a locally optimum solution and we move the node u from A to B, we get:  $\sum\nolimits_{P_i $\sum\nolimits_{u  \in Paths(I)} Probes(P_{i})$ A}{v \in B} w_{u,v})$