Question

prove it limit X
$prove it limit {x}^{2} = 4$

Answer 1

HII DEAR❤❤❤❤

|x2−4|<ε


−ε<x2−4<ε


4−ε<x2<4+ε


√4−ε<x<√4+ε

|x−2|<δ

−δ<x-2<δ


2-δ<x<2+δ

If we take 
δ=min{−2+4+ε−−−−√,2−4−ε−−−−√}