which expression represents

Question

If f(x)= √x^2-1 and g(x)=√x-1, which expression represents f(x)/g(x) for x>1 ?

 

A) 1/√x+1

B) √x+1

C) √x-1

D) √x

Answer 1

Raul,

 

I assume this is square root of (x^2-1) and square root of (x-1) at which point f(x)/g(x)=square root [(x^2-1)/(x-1)]=square root of (x+1) or B.

 

Hope that helps,

Deanna