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Mathematics
OpenStudy (anonymous):

evaluate the limit as x approaches pi/2 (xcosx)

OpenStudy (zarkon):

replace x by \(\pi/2\) and evaluate

OpenStudy (anonymous):

deja vu,that certain feeling you get when you think "i've been here before"

OpenStudy (zarkon):

you should just post this every time you get that certain feeling http://www.youtube.com/watch?v=oMsDKzTNhKY

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