Can someone help me out with the following question? A= {1,3,5,6} and B={3,5} and C={a,b,c} Compute: a. A-B = {1,6} b. B X C ( X meaning Cartesian Product) {(3,a),(3,b),(3,c),(5,a),(5,b),(5,c)} c. A (B-A) d. A {1,6} can anyone help me with 3.
Last edited by wonderstrike; Feb 24th 2009 at 03:41 PM.
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Originally Posted by wonderstrike A= {1,3,5,6} and B={3,5} and C={a,b,c} Compute: a. A-B b. B X C ( X meaning Cartesian Product) * this one confuses the heck outta me c. A Intersection (B-A) d. A symmetric difference B ps, how do I do the upside down U and symetric difference signs? [tex]A\cap B[/tex] gives [tex]A\cup B[/tex] gives [tex]A \times B[/tex] gives [tex]A\Delta B[/tex] gives symmetric difference.
Can I have help with c. the way I understand is i need to do (B-A) 1st. Well B-A is leaving me with nothing...
[tex]A^c[/tex] is the complement of A, all elements not in A.
Originally Posted by Plato is the complement of A, all elements not in A. Right.. so means that they are disjoint right?
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