My Math Forum limit problem

 Calculus Calculus Math Forum

 December 14th, 2015, 06:41 PM #1 Newbie   Joined: Dec 2015 From: new jersey Posts: 1 Thanks: 0 limit problem lim x->1 [(1/x)-1]/ [x^(1/2)-1] the answer is 2 but I have tried for hours and cannot get it. I have tried multiplying conjugates/ lcd/ and variations of both but i cannot get it. someone please help.
 December 14th, 2015, 07:24 PM #2 Newbie   Joined: Dec 2015 From: Northwest Posts: 22 Thanks: 1 Multiply the top and bottom by x. Multiply the top and bottom by the conjugate (x^1/2 +1) That should bring a smile to your face.
 December 14th, 2015, 07:27 PM #3 Newbie   Joined: Dec 2015 From: Northwest Posts: 22 Thanks: 1 Ps remember that (1-x)=-(x-1) Your answer is -2 not 2 Last edited by Ben Evans; December 14th, 2015 at 07:34 PM.

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