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Category: Limits

prove-that-lim-x-pi-2-tan-x-2-1-x-pi-2-1-

Question Number 195325 by mathlove last updated on 30/Jul/23 provethatlimxπ2tan(x2)1xπ2=1 Answered by BaliramKumar last updated on 30/Jul/23 $$\underset{{x}\rightarrow\frac{\pi}{\mathrm{2}}} {\mathrm{lim}}\:\frac{\frac{\mathrm{d}}{\mathrm{dx}}\left({tan}\left(\frac{{x}}{\mathrm{2}}\right)−\mathrm{1}\right)}{\frac{\mathrm{d}}{\mathrm{dx}}\left({x}−\frac{\pi}{\mathrm{2}}\right)}\:=\:\frac{\mathrm{sec}^{\mathrm{2}} \left(\frac{\mathrm{x}}{\mathrm{2}}\right)\centerdot\frac{\mathrm{1}}{\mathrm{2}}}{\mathrm{1}}…

Question-195315

Question Number 195315 by cortano12 last updated on 30/Jul/23 Answered by horsebrand11 last updated on 30/Jul/23 $$\:=\:\underset{{x}\rightarrow\mathrm{0}} {\mathrm{lim}}\:\frac{\mathrm{tan}\:^{\mathrm{2}} \mathrm{a}−\mathrm{tan}\:^{\mathrm{2}} \mathrm{x}−\mathrm{tan}\:^{\mathrm{2}} \mathrm{a}+\mathrm{tan}\:^{\mathrm{4}} \mathrm{a}\:\mathrm{tan}\:^{\mathrm{2}}…