Constant Function

Last updated at August 13, 2026 by

f: R → R

f(x) = c for each x ∈ R

i.e. y = c for each x ∈ R

Here c is a constant.

 

Plotting graph

For all values of x, value of y will be c

x

0

1

–2

y

c

c

c

 

Constant Function.jpg

Here,

Domain   = All values of x = R

Range = All values of y

           = c (Since y = c)

 

So, Range = {c}

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