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Category: Limits

lim-x-1-pi-arc-cos-x-x-1-

Question Number 86655 by jagoll last updated on 30/Mar/20 $$\underset{{x}\rightarrow−\mathrm{1}^{+} } {\mathrm{lim}}\:\frac{\sqrt{\pi}\:−\sqrt{\mathrm{arc}\:\mathrm{cos}\:\mathrm{x}}}{\:\sqrt{\mathrm{x}+\mathrm{1}}} \\ $$ Answered by john santu last updated on 30/Mar/20 $$\mathrm{L}'\mathrm{hopital}\:\mathrm{rule} \\ $$$$\underset{{x}\rightarrow−\mathrm{1}^{+}…

lim-x-1-e-x-1-x-n-

Question Number 86603 by Ar Brandon last updated on 29/Mar/20 $$\underset{{x}\rightarrow−\mathrm{1}} {\mathrm{lim}}\frac{{e}^{{x}} }{\left(\mathrm{1}+{x}\right)^{{n}} } \\ $$ Commented by abdomathmax last updated on 29/Mar/20 $${let}\:{f}\left({x}\right)=\frac{{e}^{{x}} }{\left(\mathrm{1}+{x}\right)^{{n}}…

lim-x-0-x-2-sin-1-x-x-1-e-1-x-e-

Question Number 86204 by jagoll last updated on 27/Mar/20 $$\underset{{x}\rightarrow\mathrm{0}} {\mathrm{lim}}\:\frac{\mathrm{x}^{\mathrm{2}} \:\mathrm{sin}\:\left(\frac{\mathrm{1}}{\mathrm{x}}\right)\:+\:\mathrm{x}}{\:\sqrt[{\mathrm{x}\:\:}]{\mathrm{1}+\mathrm{e}}\:−\mathrm{e}\:}\:? \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com

lim-x-0-2-1-cos-x-sin-2-x-

Question Number 86031 by arcana last updated on 26/Mar/20 $$\underset{{x}\rightarrow\mathrm{0}} {\mathrm{lim}}\:\frac{\sqrt{\mathrm{2}}−\sqrt{\mathrm{1}+\mathrm{cos}\:{x}}}{\mathrm{sin}\:^{\mathrm{2}} {x}}= \\ $$ Commented by arcana last updated on 26/Mar/20 $${the}\:{answer}\:{is}\:\frac{\mathrm{1}}{\mathrm{4}\sqrt{\mathrm{2}}} \\ $$ Commented…

prove-that-1-cos-isin-n-1-cos-isin-n-2-n-1-cos-2-cos-n-2-

Question Number 151559 by peter frank last updated on 21/Aug/21 $$\mathrm{prove}\:\mathrm{that} \\ $$$$\left(\mathrm{1}+\mathrm{cos}\:\theta+\mathrm{isin}\:\theta\right)^{\mathrm{n}} \\ $$$$+\:\left(\mathrm{1}+\mathrm{cos}\:\theta−\mathrm{isin}\:\theta\right)^{\mathrm{n}} =\mathrm{2}^{\mathrm{n}+\mathrm{1}} \mathrm{cos}\:\frac{\theta}{\mathrm{2}}\mathrm{cos}\:\frac{\mathrm{n}\theta}{\mathrm{2}} \\ $$ Answered by Olaf_Thorendsen last updated on…