Question

i think its c but im not too sure.use limits to describe the behavior of f(x)=2/x^2-1 at values of x in its domain.
a) (-infinity,1)
b) (-infinity,4)
c) (4,infinity)
d) (1,4)

Answer 1

set denominator equal to 0 to see restrictions in domain since this means the function is undefined when dividing by zero

x^2 -1 = 0

x = +-1

Answer 2

Domain:

(-inf,-1) (-1,1) (1,inf)