Mathematics

Mathematics

Problem

Evaluate lim⁡h→0tan⁡(x+h)−tan⁡xh\displaystyle\lim_{h\to0}\frac{\tan(x+h)-\tan x}{h}. a) tan⁡2x\tan^{2}x b) sec⁡2x\sec^{2}x c) csc⁡2x\csc^{2}x d) sec⁡xtan⁡x\sec x\tan x

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