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
f(x)=sqrt (x^2-1 )
f/g= sqrt((x+1)(x-1))/sqrt(x-1)
= sqrt(x+1)
a) 1/√x+1
b) √x-1
c) √x+1
d) √x
f/g= sqrt((x+1)(x-1))/sqrt(x-1)
= sqrt(x+1)