Continuous Functions
A Function $f(x)$ is continuous if the Limit of this function always exists
otherwise the function is discontinuous
- $f(x)$ is continuous at $x = a$ if $\lim\limits_{x \to a} f(x) = f(a)$
- $f(x)$ is continuous everywhere if its continuous for all $a$ in the domain of $f(x)$
Many functions are continuous, for example:
Careful!
- some functions might look discontinuous, but they may be continuous
- this is the case when the discontinuously-looking points are not in the domain
- but if the function is defined in this point, then it's discontinuous
Discontinuous:
Sources