epsilon and deltas!!! aggh lol

[Sarahisme]

hey can anyone help me do this problem?

 

Prove using the formal definition of limit

lim x→1 √ x = 1

 

Thanks and cheers

 

Sarah

[bloodhound]

Just use the definition... you just have to show that for every positive epsilon, you can find a delta st. if the distance between x and 1 is greater than 0 and less than delta, then the distance between sqrt(x) and 1 is less than epsilon.

[Sarahisme]

yeah i know i tried but i think you have to assume at some point something like that

.5<x<1.5

or something?

 

i am not sure?!?!

lol