Question

What is the domain of 1/ x-1 + 1/x+1??

Answer 1

\[\frac{1}\frac{x-1}+\frac{1}\frac{x+1}\]

Answer 2

\[\frac{1}{x-1}+\frac{1}{x+1}\]

Answer 3

Yes. ^^

Answer 4

look at the first fraction
when is that undefined

Answer 5

When x is -1?

Answer 6

the first fraction is undefined when x=1
the second fraction is undefined when x=-1
the domain is all real numbers but x=1 and x=-1
interval notation: (-inf,-1)U(-1,1)U(1,inf)