Question

List the elements in the following sets:

(i) {x ∈ N : x = 2y,y ∈ N,2< y ≤ 5}

(ii) {x ∈ Z : x
2 = 5x − 4}

(iii) {x : y ∈ N, x =
y + 1
1
}​

Answer 1

Answer:

R={(x,y):y=x+5,

x is a natural number less than 4,x,y∈N

R={(1,6),(2,7),(3,8)}

(ii) Domain (R)=[1,2,3],

Range (R)={6,7,8}.