document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1008007>Question 1008007</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The 2nd term of an A.P is (a-b) and 4th term is (a+b), find the 5th term and sum of the first 5 terms of the A.P </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #623774 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=623774\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d, common difference<BR>\n" );
document.write( "index 2, term is a-b<BR>\n" );
document.write( "index 4, term is a+b\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%2Bb%29-%28a-b%29=2d ALIGN=MIDDLE  ALT=\"%28a%2Bb%29-%28a-b%29=2d\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b=2d ALIGN=MIDDLE  ALT=\"2b=2d\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28b=d%29 ALIGN=MIDDLE  ALT=\"highlight_green%28b=d%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The term at index 1 is  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a-b%29-d=%28a-b%29-b=a-b-b=highlight_green%28a-2b%29 ALIGN=MIDDLE  ALT=\"%28a-b%29-d=%28a-b%29-b=a-b-b=highlight_green%28a-2b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "The general term for the sequence using n for iNdex is  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28%28a-2b%29%2B%28n-1%29b%29 ALIGN=MIDDLE  ALT=\"highlight%28%28a-2b%29%2B%28n-1%29b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "The term at index 5?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a-2b%2B%285-1%29b ALIGN=MIDDLE  ALT=\"a-2b%2B%285-1%29b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a-2b%2B4b ALIGN=MIDDLE  ALT=\"a-2b%2B4b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28a%2B2b%29 ALIGN=MIDDLE  ALT=\"highlight%28a%2B2b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "You can look for the formula for sum of an arithmetic sequence to answer sum of the<BR>\n" );
document.write( "first five terms.  You might also just use this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28%28firstTerm%2BlastTerm%29%28n%2F2%29%29 ALIGN=MIDDLE  ALT=\"highlight_green%28%28firstTerm%2BlastTerm%29%28n%2F2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and you know n=5 here.<BR>\n" );
document.write( " </SPAN>\n" );
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