Question

5. Domain of {(x,y)/ xy = 12, x, ye n}​

Answer 1

• The y belongs to a natural number but xy is 12
• so,the value of x is 12/y
• $x = 12 \div y$
• If the y is 1,2,3,4,5..
• $x = 12 \div 1 = 12$
• $x = 12 \div 2 = 6$
• so the ordered pair must be
• $(12.1)(6.2)......$
• so the domain is (12,6,...)