Let f be a function defined on an interval Δ which may be (un)bounded. Then f is uniformly continuous on Δ if
It is continuous at every point to every other point
If f is lipschtiz continuous on Δ
Which then also implies that it is continuous on Δ
And example
Disprove!
Find a single point (finite or infinite) where f is not uniformly continuous
Look for a point where f oscillates or grows
Boundedness theorem
If f is a continuous function on a closed bounded interval, then f is bounded
How to prove that if f is Lipshcitz continuous on Δ then f is uniformly continuous on Δ
Take δ_ε = ε/C in definition of uniform continuity