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OpenStudy (anonymous):

how would you prove lim h->0 of cos (c+h) = cos (c)

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OpenStudy (anonymous):

The problem seems to already be solved. To prove limits, you first try by plugging in the limit value into the equation. cos (c + 0) = cos c So the problem solves itself! Sometimes it can get tricky.

OpenStudy (anonymous):

ah thank you! (:

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