Functions and Models

Functions and Models

Functions and Models

Question 1:

f(x) = x + 5

This is a function because it maps all the points in the domain to some point in the co-domain

b. f(x) = 3 if x>2 otherwise f(x) = -2

This is a function because it maps all the points in the domain to some point in the co-domain

c. f(x) = 7 if x>0 or f(x) = -7 if x<0 or f(x) = 7 or -7 if x = 0

This is not a function because the image of x = 0 is not unique, i.e., 0 in domain is mapped to both ...