Mathematics

Mathematics

Problem

What is ddx[sec⁡x]\dfrac{d}{dx}\bigl[\sec x\bigr]? a) −sec⁡xtan⁡x-\sec x\tan x b) sec⁡xtan⁡x\sec x\tan x c) tan⁡xsec⁡2x\tan x\sec^2 x d) sec⁡2x\sec^2 x

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