f(x) បំពេញលក្ខខណ្ឌ  $\lim_{x\rightarrow0^-}\ f\left(x\right)=\lim_{x\rightarrow0^+}\ \ f\left(x\right)=f\left(0\right)$  

f(x) បំពេញលក្ខខណ្ឌ  $\lim_{x\rightarrow0}\ f\left(x\right)=f\left(0\right)$  

f(x) បំពេញលក្ខខណ្ឌ  $\lim_{x\rightarrow0}\ \ f\left(x\right)\ne f\left(0\right)$