Question

Express the set x > 1 using interval notation.

FOR MEDAL

Answer 1

Hmm, maybe this: (1,inf); The parentheses means 'not including'. So, x HAS to be greater than 1, and less than infinity, because x cannot really be infinity.

Answer 2

so how is that shown ?

Answer 3

(1,inf)? That's what I'm saying. You can write it a few ways. That's one way.
\[1 < x < infinity\]

Answer 4

Is another way.