MP 3 :: Continuous at a point
Consider the function $f(x)$ that is defined to be $x$ when $x$ is a rational number and $0$ otherwise. That is,
Determine all points where $f$ is continuous and give justification for your answer.
Consider the function $f(x)$ that is defined to be $x$ when $x$ is a rational number and $0$ otherwise. That is,
Determine all points where $f$ is continuous and give justification for your answer.