document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=856532>Question 856532</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help with notations. I don't understand which signs mean what. I have a question that says: \r<BR>\n" );
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document.write( "Let set C = {1, 2, 3, 4, 5, 6, 7, 8} and set D = {2, 4, 6, 8}\r<BR>\n" );
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document.write( "Which notation shows the relationship between set C and set D?\r<BR>\n" );
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document.write( "I don't know how to answer this because I don't understand the meanings of the notations and I can't find them in my lesson. The signs are:\r<BR>\n" );
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document.write( "U,&#1352;, and a sideways U with a line under it (looks kind of like an underlined c). \r<BR>\n" );
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document.write( "Can you please explain what each sign means?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #515981 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=515981\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let set C = {1, 2, 3, 4, 5, 6, 7, 8} and set D = {2, 4, 6, 8} <BR>\n" );
document.write( "Which notation shows the relationship between set C and set D? <BR>\n" );
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document.write( "Since every element of D is an element of C,<BR>\n" );
document.write( "D is a subset of C.  Use the symbol that looks like <.<BR>\n" );
document.write( "U is the union of sets; it is the set that contains all the elements<BR>\n" );
document.write( "of both sets that are being united.<BR>\n" );
document.write( "The upside-down U is the intersection; it is the set of all the<BR>\n" );
document.write( "elements that are common to the sets involved.<BR>\n" );
document.write( "The sideways U with the line over it is used because a <BR>\n" );
document.write( "every set is a subset of itself; the symbol equates to <=<BR>\n" );
document.write( "If there is no line over the sideways U, the subset is called<BR>\n" );
document.write( "a proper subset.<BR>\n" );
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document.write( "Google will tell you more about set notation.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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