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Category: Limits

Question-32376

Question Number 32376 by rsen3579@gmail.com last updated on 24/Mar/18 Commented by abdo imad last updated on 24/Mar/18 $${we}\:{have}\:{e}^{{x}} \:\sim\mathrm{1}+{x}\:+\frac{{x}^{\mathrm{2}} }{\mathrm{2}}\:{for}\:{x}\in{V}\left(\mathrm{0}\right)\:{alsowehave} \\ $$$${e}^{{sinx}} \:={e}^{{x}−\frac{{x}^{\mathrm{3}} }{\mathrm{3}!}\:+\mathrm{0}\left({x}^{\mathrm{5}} \right)}…

lim-0-arc-sin-k-cos-1-k-2-arc-sin-k-1-k-2-

Question Number 97840 by bemath last updated on 10/Jun/20 $$\underset{\gamma\rightarrow\mathrm{0}} {\mathrm{lim}}\:\left(\mathrm{arc}\:\mathrm{sin}\:\frac{\mathrm{k}\:\mathrm{cos}\:\gamma}{\:\sqrt{\mathrm{1}+\mathrm{k}^{\mathrm{2}} }}\:−\:\mathrm{arc}\:\mathrm{sin}\:\frac{\mathrm{k}}{\:\sqrt{\mathrm{1}+\mathrm{k}^{\mathrm{2}} }}\right)\:=? \\ $$ Commented by john santu last updated on 10/Jun/20 $$=\:\mathrm{0}\: \\…

find-tbe-nature-of-n-2-1-n-ln-n-2-

Question Number 32298 by abdo imad last updated on 22/Mar/18 $${find}\:{tbe}\:{nature}\:{of}\:\:\sum_{{n}\geqslant\mathrm{2}} \:\:\:\frac{\mathrm{1}}{{n}\left({ln}\left({n}\right)\right)^{\mathrm{2}} }\:. \\ $$ Commented by abdo imad last updated on 01/Apr/18 $$\:{let}\:{put}\:\varphi\left({t}\right)\:=\:\frac{\mathrm{1}}{{t}\left({lnt}\right)^{\mathrm{2}} }\:{with}\:{t}\geqslant\mathrm{2}\:\:{we}\:{have}…