document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1081294>Question 1081294</A>: <I><SPAN STYLE=\"word-break: break-all;\"> -1, -3, -1, 5, 15<BR>\n" );
document.write( "Find first differences for the sequence in order from a1 to a5. Determine whether or not the series is quadratic or not. <BR>\n" );
document.write( "A.) , 2, 6, 10; not quadratic<BR>\n" );
document.write( "B.) 2, 2, 6, 10; quadratic<BR>\n" );
document.write( "C.) -2, 2, 6, 10; not quadratic<BR>\n" );
document.write( "D.) -2, 2, 6, 10; quadratic </SPAN>\n" );
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document.write( "-1 | | -3 | | -1 | | 5 | | 15<BR>\n" );
document.write( " | -2 | | 2 | | 6 | | 10 | .........first differences<BR>\n" );
document.write( " | | 4 | | 4 | | 4 | | .........second\r<BR>\n" );
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document.write( "means it's quadratic\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5Bn%5D+=+2n%5E2+-+8n+%2B+5 ALIGN=MIDDLE  ALT=\"a%5Bn%5D+=+2n%5E2+-+8n+%2B+5\"   DISABLED_style= \"max-width:90%; height:auto;\" > (for all terms given)\r<BR>\n" );
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document.write( "D.) -2, 2, 6, 10; quadratic </SPAN>\n" );
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