Question

What is A X B ?
is it like A union B ?

Answer 1

no

Answer 2

A multiply by B

Answer 3

AxB produces a set of ordered pairs (a,b)

AuB produces a set of elements of A+B

AnB produces a set of elements that A and B have in common

Answer 4

so a set of ordered pairs. ?

Answer 5

yes, spose we have the set X={-1,0,1,2,3} and Y={0,1,2,3,4}

XxY is the set of all ordered pairs (x,y) that can be made:

Answer 6

-1, {0,1,2,3,4} is 5 points
0, {0,1,2,3,4} is 5 points
1, {0,1,2,3,4} is 5 points
2, {0,1,2,3,4} is 5 points
3, {0,1,2,3,4} is 5 points


for a total set of 25 points

Answer 7

X union Y would just be the set; { -1,0,1,2,3,4}

Answer 8

so if i have this
Let A = {circle, square} and let B = {3, 4, 5}. Find A X B.

Answer 9

would it be {(circle, 3), (circle, 4), (circle, 5), (square, 3), (square, 4), (square, 5)}

Answer 10

exactly

Answer 11

ahhh i see K thanks!

Answer 12

youre welcome