angeltia96 angeltia96

16-06-2017
Mathematics

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find the value of the derivative (if it exists) at each indicated extremum. (If an answer does not exist, enter DNE.)
f (x) = cosπx/2

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egenriether egenriether

16-06-2017

The derivative of cos(ax) is
-a*sin(ax)
So here we have a=pi/2 so
d/dx(cos(pi*x/2))=-(pi/2)sin(pi*x/2)

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