Convert   BR    to    $BR    in Solution.
git pull upstream master
Merge branch 'master' of github.com:openwebwork/webwork-open-problem-library
Merge branch 'master' of github.com:openwebwork/webwork-open-problem-library
2013-12-21 4:57pm
Improve formatting of matrices.
Bugfix on formatting commit.
Fix dropped comma.
Fixing tags
Merge branch 'master' of github.com:openwebwork/webwork-open-problem-library
Fix bug 2985.
Streamlining taxonomy
Fix bug 2987
Fix bug 2984
Merge branch 'master' of github.com:openwebwork/webwork-open-problem-library
Simplify code
Correct answer is now a single vector and extra error message added

The correct answer was previously given as a sum of vectors, despite the fact that the student must enter a single vector.  This has been corrected.

An error message is now generated whenever a student enters a sum of vectors instead of a single vector.
testing commit; no real change.
Remove extra brace in the solution
Merge branch 'master' of github.com:openwebwork/webwork-open-problem-library
Change checking to use integer arithmetic to avoid roundoff error problems
Fix randomization bug