Question

find a relation R defined
on the set A={1, 2, 3, 4} determined by X+y=5. And
hence find
domain of R​

Answer 1

Step-by-step explanation:

x + y = 5

f(x) = y = -x + 5

x ∈ A or x ∈ {1,2,3,4}

f(1) = y = -1 + 5 = 4

f(2) = y = -2 + 5 = 3

f(3) = y = -3 + 5 = 2

f(4) = y = -4 + 5 = 1

domain of R = {1,2,3,4}