Question

A = {− 2,− 1, 1, 2} and f = {(x , ), } .
x
1 x ∈ A
List the domain & range of f

Answer 1

Answer:

anime

Step-by-step explanation:

Given:A={−2,−1,1,2} and f={(x,

x

1

):x∈A}

f={(−2,

2

−1

),(−1,−1),(1,1),(2,

2

1

)}

We know that function is a relation in which each element of the domain is paired with exactly one element of the range.

⇒f(−2)=

2

−1

,f(−1)=−1,f(1)=1,f(2)=

2

1

∴ it is a function according to the above definition

Range={

2

−1

,−1,1,

2

1

}