Question

Help me prove this lim please.
lim(x^1/2) = a^1/2 when x is going to a. ( x-->a )

Answer 1

IF:\[f(x)=\sqrt{x}\]
Prove that:
\[\lim_{x \rightarrow a}f(x)=\sqrt{a} \]

Answer 2

You dont know how to prove it ? :/

Answer 3

LOL. I though that it was helpfull here! :P

Answer 4

I'm not going to keep writing lim everywhere.

Try substituting 'a' in place of 'x'. That should get you your answer.

Answer 5

Nahhhh.... I have to prove it,not to found the lim.

Answer 6

You could use first principles to find the limit which would effectively be proving it.

Answer 7

Yes,I had to start with hte principles of limit. But I stuck on the solution. :/

Answer 8

Are you suppose to go through an epsilon-delta proof? :d oh boy...

Answer 9

yeah...... :/

Answer 10

An epsilon delta proof? Have fun with that. I memorized that for my midterm.

Answer 11

haha! I just hope to not have those thing on my exams. :P