thanks guys

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- Feb 27th 2008, 08:46 AMadsSet Theroy
thanks guys

- Feb 27th 2008, 09:34 AMPlato
The notation (A-B) also written as (A\B) is known as set difference: the set of elements of A that do not belong to B.

So that is A intersection with the complement of B.

I will help with part b.

For symbols see http://www.mathhelpforum.com/math-he...-tutorial.html