What expression represents the derivative of tan(x) at a=2pi/3
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What expression represents the derivative of tan(x) at a=2pi/3

[From: ] [author: ] [Date: 13-09-25] [Hit: ]
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Please help, so confused. Explain how you got the answer. Thanks!

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y = tan (x)

y' = sec^2 (x)

y' = sec^2 (2pi/3) = 4
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