how do i find the continuity f(x) = 1. Need an example to help understand. Cannot understand from my notes. I get the concept but don't understand how to find the continuity...

Answer 1

f(x) is continuous at x=c if

lim(x->c) f(x) = f(c)

since f(x) = 1 the limit exists for all x, and the limit is 1, since f(x)=1 for any x.