document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1186957>Question 1186957</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2. Given that\r<BR>\n" );
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document.write( "(4 20)<BR>\n" );
document.write( "2<BR>\n" );
document.write( "n +<BR>\n" );
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document.write( "is the sum of the first n terms of an arithmetic sequence.\r<BR>\n" );
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document.write( "a) Write down the expression for the sum of the first\r<BR>\n" );
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document.write( "( 2) n − terms. [3 marks]<BR>\n" );
document.write( "b) Find the first term and the common difference of the above sequence. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #817917 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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/cgi-bin/show-face.mpl?user=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=817917\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Unreadable in that format.<br><BR>\n" );
document.write( "Type the information from your keyboard -- copy and paste often doesn't work.<br><BR>\n" );
document.write( "Re-post<br><BR>\n" );
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