document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=979675>Question 979675</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The following function defines a recursive sequence:\r<BR>\n" );
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document.write( "f(0) = -4\r<BR>\n" );
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document.write( "f(1) = 12\r<BR>\n" );
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document.write( "f(n) = -3•f(n -1) - 2•f(n - 2); for n > 1\r<BR>\n" );
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document.write( "Which of the following sequences is defined by this recursive function?\r<BR>\n" );
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document.write( " -4, 12, -28, 60, …<BR>\n" );
document.write( " -4, -12, -28, -60, …<BR>\n" );
document.write( " -4, 12, -18, 54, …<BR>\n" );
document.write( " -4, 12, -18, -54, … </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #600964 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=600964\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "Plug in n = 2 to get<BR>\n" );
document.write( "f(n) = -3*f(n -1) - 2*f(n - 2)<BR>\n" );
document.write( "f(2) = -3*f(2 -1) - 2*f(2 - 2)<BR>\n" );
document.write( "f(2) = -3*f(1) - 2*f(0)<BR>\n" );
document.write( "f(2) = -3*12 - 2*(-4)<BR>\n" );
document.write( "f(2) = -28\r<BR>\n" );
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document.write( "Plug in n = 3 to get<BR>\n" );
document.write( "f(n) = -3*f(n -1) - 2*f(n - 2)<BR>\n" );
document.write( "f(3) = -3*f(3 -1) - 2*f(3 - 2)<BR>\n" );
document.write( "f(3) = -3*f(2) - 2*f(1)<BR>\n" );
document.write( "f(3) = -3*(-28) - 2*(12)<BR>\n" );
document.write( "f(3) = 60\r<BR>\n" );
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document.write( "So the sequence is -4, 12, -28, 60<BR>\n" );
document.write( " </SPAN>\n" );
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