# Math Help - Need help find left and right limits.

1. ## Need help find left and right limits.

I need to find the left and right limit at x=1(if they exist)

$sqrt1-x^2$

I'm not sure where to begin with the sqaure root.

Thanks
Jason

2. Originally Posted by Darkhrse99
I need to find the left and right limit at x=1(if they exist)

$sqrt1-x^2$

I'm not sure where to begin with the sqaure root.

Thanks
Jason
$lim_{x\rightarrow 1^-} \sqrt{1-x^2}=0$ I think this is clear

$lim_{x\rightarrow 1^+} \sqrt{1-x^2}=dose...not.....exist$

this dose not exist as you know square root of negative numbers undefined right when I take the limit of the function when x approach 1 from right it is like I take a value bigger than 1 just a littile like this 1.0000000000000000000000000000000001 so the value under the square root become negative and this not allow