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lim-x-pi-2-pi-cos-x-2x-tan-x-




Question Number 160938 by cortano last updated on 09/Dec/21
lim_(x→(π/2))  ((π/(cos x)) −2x tan x )=?
$$\underset{{x}\rightarrow\frac{\pi}{\mathrm{2}}} {\mathrm{lim}}\:\left(\frac{\pi}{\mathrm{cos}\:\mathrm{x}}\:−\mathrm{2x}\:\mathrm{tan}\:\mathrm{x}\:\right)=? \\ $$
Answered by blackmamba last updated on 09/Dec/21

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