Question

Let f = {(x,y) |X, Y E N and y = 2x} be a relation on N. Find the domain, co-domain
and range. Is this relation a function?​

Answer 1

Answer:

Step-by-step explanation:let:X=(1,2,3,4,5....)

Then,sinceY=2X.So,Y=(2*1,2*2,2*3,2*4,2*5,...)

now,since every element has image i.e 1 has 2, 2 has 4,3 has 6 ,4 has 8and 5 has 10.So,this relation is a function..

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Answer 2

Domain - natural no.

co domain -natural no.

range - even no