br9ooklyQyPet br9ooklyQyPet

09-12-2016
Mathematics

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Find the derivative of f(x)=cosx-2tanx.

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Аноним Аноним

09-12-2016

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HomertheGenius HomertheGenius

09-12-2016

f ( x ) = cos x - 2 tan x
The derivative:
f ` ( x ) = - sin x - 2 * 1 / cos² x =
= - sin x - 2 / cos² x =
= ( - sinx cos² x - 2 ) / cos² x

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