Page 3 - E booklet prep 3 bader 2025 b_Neat

1- Cartesian product

Before we know the Cartesian product we must know the order pair( ?? , ?? )
( ?? , ?? ) is a position of a point in the Cartesian plane

Where : ?? first projection

?? second projection

Example1:

Determine the order pair of each of the
following points

2 8M ( …. ... , … ….. ) E ( …2.... , 0.. )

1 7Y ( ….. .. , … ….. ) R ( …5.. , …0.. )

D ( …0... , ……1.. ) H ( …7.... , 7.. )

2 1J ( …... . , …… .. ) L ( ….8.. , …6.. )

3 4T ( … .... , … ….. ) U ( …8... ,…5.. )

Notes:

? (a,b)? (b,a)

? (a , b ) ? { a , b }

? If ( a , b ) = ( x , y ) , then a = x , b = y

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