Calc, Notice the x's cancel each other, leaving (I think) just 1 in the numerator. Good luck with the problem! Ben
> Date: Tue, 10 Apr 2012 15:00:16 -0400 > From: email@example.com > To: firstname.lastname@example.org > Subject: Re: RE: how to find limit lim (sqrt(x+1) - sqrt(x) > > Hello Ben, > > I had tried that, but stuck after that. If I do that, it gives me (x - 1 - x) / (sqrt(x+1) + sqrt(x)) > > I am not sure how to take limit of that after this.