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Mathematics 21 Online
OpenStudy (anonymous):

determine all critical points for the function; y = 4x^2 - 128rootof(x)

myininaya (myininaya):

find y' first

myininaya (myininaya):

then x that satisfy y'=0 and where y' DNE but make these x are in the domain of the function y

myininaya (myininaya):

those are your critical numbers

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