I understand that U means union and n is intersection but I'm unsure as how to use them in set notation such as expressing values for x in set notation, I thought it should be union all the time but in the example above it is an intersection.

(edited 1 year ago)

Reply 4

mqb2766

21

Original post by Username123455

I understand that U means union and n is intersection but I'm unsure as how to use them in set notation such as expressing values for x in set notation, I thought it should be union all the time but in the example above it is an intersection.

Its exactly the same as a venn diagram. If both condition must be satisfied, its n (intersection, AND). If either condition must be satisfied its u (union, OR). Theyre two different ways of combining two sets (venn diagram). There must be an example or two in your textbook?

Reply 5

Username123455

OP

11

Original post by mqb2766

Its exactly the same as a venn diagram. If both condition must be satisfied, its n (intersection, AND). If either condition must be satisfied its u (union, OR). Theyre two different ways of combining two sets (venn diagram). There must be an example or two in your textbook?