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Please help to solve  lim(x->1) (sqrt(x+a)+b)/(x^2-1)=1

 

lim(x->1) (sqrt(x+a)+b) / (x^2-1)=1

lim(x->1) (sqrt(x+a)+b) * (sqrt(x+a)-b) / [(x^2-1) * (sqrt(x+a)-b)] = 1

lim(x->1) (x+a-b^2) / [(x-1) * (x+1) * (sqrt(x+a)-b)] = 1

Guest Sep 17, 2018
edited by Guest  Sep 17, 2018
edited by Guest  Sep 17, 2018
 #1
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Are you asking for a value of a and b that will make this work?

 

\(\displaystyle \lim_{x^-\rightarrow1} \frac{\sqrt{x+a}\;+b}{(x^2-1)}=1\)

 

 

No idea.

Melody  Sep 17, 2018

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