Tiêu đề 3 Relations _ Functions_ Some Important Functions.ppt ✅

FUNCTIONS

Then, the function defined by f(x)=c for all x∈R SOME IMPORTANT FUNCTIONS Constant function: Let ‘c’ be the fixed number. is called a constant function. Clearly, domain of (f)=R and Range of (f)={c} X' X Y Y' f(x)=c (0, c) O
Identity function Clearly dom (f)=R and Range (f)=R X' X Y ' Y O f(x)=x The function defined f(x)=x for all x∈R is called the identity function.