piece wise

Question

evaluate the following: f(-1) and f(1)

 

f(x)={x+1; x≤-1

        {3; -1<x≤2

        {x-1; x>2

Answer 1

x=-1 is in the interval   x≤-1

x =1 is in the interval    -1<x≤2

 

Knowing this, can you evaluate f(-1) and f(2) using the appropriate sub-functions?