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December 14th, 2015, 06:41 PM   #1
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Angry 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.
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December 14th, 2015, 07:24 PM   #2
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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.
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December 14th, 2015, 07:27 PM   #3
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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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