Calculus:Limits

$\lim _{x\to a}f(x)=L,$ When you see this equation it means you are try to let x approaches a.

You may have a question why can't we just write it as

$f(a)=L,$

some times we can't /Users/henrykoo/Desktop/Screen Shot 2021-08-28 at 8.02.52 PM.png