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Mathematics 9 Online
OpenStudy (anonymous):

y=3tan^2(x/3) find y'

myininaya (myininaya):

\[y'=3 (x/3)' 2 \tan(x/3) \sec^2(x/3)\]

myininaya (myininaya):

i used chain rule

OpenStudy (anonymous):

okay how do you find y'(pi)??

myininaya (myininaya):

plug it into y'

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