Add general formulas

git-svn-id: svn+ssh://kasztan.ifj.edu.pl/home/theory/svnroot/camtoph/Gituliar@10 d7a11de1-dac9-4f50-91c3-d62249753022
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Add EV integral
05-12-2013
Add breqn.sty
Merge branch 'master' of github.com:gituliar/physics