Write in set builder form

x={0,3,6,9,12}

Question

Write in set builder form

x={0,3,6,9,12}

anonymous · Answer

I am in class 8 :(

nincompoop · Answer

x={x| ∊ N 0 ≤ 3x ≤ 9}

anonymous · Answer

What? :o

nincompoop · Answer

consult with the purple guys

anonymous · Answer

You used x such that and belongs to together.

nincompoop · Answer

my set-builder notation is kind of rusty

nincompoop · Answer

such that x is |x 

x={x| x ∊ N, 0 ≤ 3x ≤ 9}

anonymous · Answer

Good :D

nincompoop · Answer

N is the natural number 1, 2, 3 etc 
where 0 is greater than or equal to 3x and 3x is less than or equal to 9 
solving for x is dividing them by 3 
so you can say that your range is just 3 
0,1,2,3 
but your codomain is 0,9
your domain is set of all natural numbers 1,2, 3, etc

anonymous · Answer

@nincompoop I am really sorry about the network issue.

Can you tell me whether these sets are equal?

{1,3,3,3,5,5,5,5,5} ,{5,3,1}