Question Number 144744 by mondlihk last updated on 28/Jun/21
Answered by Olaf_Thorendsen last updated on 28/Jun/21
$$\underset{\left({x},{y}\right)\rightarrow\left(\mathrm{0},\mathrm{0}\right)} {\mathrm{lim}}\frac{{x}−\mathrm{1}}{{y}−\mathrm{1}}\:=\:\underset{{x}\rightarrow\mathrm{0}} {\mathrm{lim}}\:\frac{{x}−\mathrm{1}}{\mathrm{2}{x}−\mathrm{1}}\:=\:\mathrm{1} \\ $$