Answers

2016-04-11T14:20:05+05:30
R={ (x,y) / x,y ∈ N,  x + 2y = 5} 
x is the domain of the function
Domain 
∈ Natural number
Range ∈ Natural number
x + 2y = 5
2y = 5 - x
y = 
 \frac{5-x}{2}
f(x) =  \frac{5-x}{2}         ∵ y∈N
x < 5
If x is odd number then y ∈ N
If x is even nuber then y ∉ n
 ∴domain of f(x) = { 1 , 3 }
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