Entering answers using inequality or interval notation:

Inequality
Notation * Interval
Notation Remarks
x<2 (-infinity,2) Use rounded parentheses (   or   ) at infinite endpoints
x>2 (2,infinity)
x<=2 (-infinity,2]
x>=2 [2,infinity)
0<x<=2 (0,2]
0<x and x<2 (0,2) and   is special
x<0 or x>2 (-inf,0)U(2,inf) or   is special
U   denotes union
x=0 or x=2 {0,2} finite sets are allowed using curly braces   {a,b,c}
x<3 or x>3 (-inf,3)U(3,inf)
x != 3
R-{3} set differences are allowed

* Some questions may not allow interval notation to be used