document.write( "Question 480600: I am confused on how to do this\r
\n" ); document.write( "\n" ); document.write( "let
\n" ); document.write( "U= {1,2,3,4,5,6,7,8}
\n" ); document.write( "A= {1,2,4,5,8}
\n" ); document.write( "B= {2,3,4,6}\r
\n" ); document.write( "\n" ); document.write( "determine A'n B
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Algebra.Com's Answer #329150 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
i believe you are looking for A intersect B.
\n" ); document.write( "this means the elements that are common to both set A and set B.
\n" ); document.write( "since A = {1,2,4,5,8} and B = {2,3,4,6}, the elements that are in both A and B are {2,4}
\n" ); document.write( "i just notice that you are talking about A' rather than A.
\n" ); document.write( "A' is the elements that are not in A.
\n" ); document.write( "that's a different story.
\n" ); document.write( "we'll start again.
\n" ); document.write( "your givens are:
\n" ); document.write( "U= {1,2,3,4,5,6,7,8}
\n" ); document.write( "A= {1,2,4,5,8}
\n" ); document.write( "B= {2,3,4,6}
\n" ); document.write( "all 3 of these sets are involved.
\n" ); document.write( "the elements that are not in A would be the elements that are in U or in B, but not in A.
\n" ); document.write( "since the elements that are in A are {1,2,4,5,8}, then the elements that are not in A would be {3,6,7}
\n" ); document.write( "this makes a' = {3,6,7}
\n" ); document.write( "now you want the intersection of the elements that are not in A that are also in B.
\n" ); document.write( "look for any of {3,6,7} in B.
\n" ); document.write( "you see that A'^B = {3,6}
\n" ); document.write( "those are the elements that are not in A and that are also in B.\r
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