- #1
denian
- 641
- 0
using algebraic laws of sets, show that, for any set A and set B that
( A U B ) [inter] ( A U B' ) = A
this is my working
( A U B ) [inter] ( A U B' )
= A U ( B [inter] A ) U ( B [inter] B' )
= ( A U B ) [inter] ( A U A )
= ( A U B ) [inter] A
= A U ( B [inter] A )
= A ( shown )
i think this working is wrong. is there other way better than this?
( A U B ) [inter] ( A U B' ) = A
this is my working
( A U B ) [inter] ( A U B' )
= A U ( B [inter] A ) U ( B [inter] B' )
= ( A U B ) [inter] ( A U A )
= ( A U B ) [inter] A
= A U ( B [inter] A )
= A ( shown )
i think this working is wrong. is there other way better than this?