Question

How do you find the limit as (x,y) tends to (0,0) of (x^2 + y^2)/(sqrt(x^2 + y^2 + 1) -1)? I don't know what to sub in to find this.

Answer 1

maybe we can try multiplying top and bottom by the conjugate, like you would if you just had
\[\frac{x}{\sqrt{x+1}-1}\]

Answer 2

Math Processing Error .. in nice RED letters .....

Answer 3

@mattfuery , how do we fix that since its only appears to be affecting my computer

Answer 4

@mattfeury

Answer 5

that one turned blue yay!!

Answer 6

othere have complained they cannot read what i write as well

Answer 7

it depends on what you wrote :)

Answer 8

Thanks satellite, I still understood what you meant. That method worked and I got the correct answer of 2.