document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=978413>Question 978413</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the equation of the following  sequence?<BR>\n" );
document.write( "1. -5, -2, 1, 4....<BR>\n" );
document.write( "2.3, -6, 12 -24...<BR>\n" );
document.write( "3.1, 4, 9, 16....<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #599836 by </B><A HREF=/tutors/aboutme.mpl?userid=428225><B>428225(90)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=428225><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=428225><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=599836\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) a=-5 (a is the first term) d=3 (d is the common difference between the terms)<BR>\n" );
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document.write( "So using the arithmetic sequence formula...<BR>\n" );
document.write( "u(subscript n) = -5+(n-1)(3)<BR>\n" );
document.write( "Equation of sequence =3n-8      <BR>\n" );
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document.write( "2)a=-6 r=-2 (When two numbers are next to each other, you find r by dividing the latter term by the previous term. In this case you can divide -6 by 3, or 12 can be divided by -6 to get r=-2)<BR>\n" );
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document.write( "Equation of sequence = -6(-2)^(n-1)<BR>\n" );
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document.write( "3) The geometric equation of this sequence is a lot simpler than the others, you must simply spot that the numbers in the term are the square numbers.<BR>\n" );
document.write( "So...<BR>\n" );
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document.write( "Equation of sequence = n^2 </SPAN>\n" );
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