document.write( "Question 642821: 9,13,17,21,25,29... the formula for the general term of infinite sequence is
\n" ); document.write( "an=4n+9
\n" ); document.write( "an=4n-9
\n" ); document.write( "ab=4n
\n" ); document.write( "an=4n^2
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Algebra.Com's Answer #404232 by MathLover1(20850)\"\" \"About 
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the formula for the general term of infinite sequence is\r
\n" ); document.write( "\n" ); document.write( "\"an=4n%2B9\" where \"n\" is element of the set {0.1,2,3,......}\r
\n" ); document.write( "\n" ); document.write( "for \"n=0\"\r
\n" ); document.write( "\n" ); document.write( "\"an=4n%2B9\"...=>...\"an=4%2A0%2B9=9\"\r
\n" ); document.write( "\n" ); document.write( "for \"n=1\"\r
\n" ); document.write( "\n" ); document.write( "\"an=4n%2B9\"...=>...\"an=4%2A1%2B9=13\"\r
\n" ); document.write( "\n" ); document.write( "for \"n=2\"\r
\n" ); document.write( "\n" ); document.write( "\"an=4n%2B9\"...=>...\"an=4%2A2%2B9=17\"\r
\n" ); document.write( "\n" ); document.write( "for \"n=3\"\r
\n" ); document.write( "\n" ); document.write( "\"an=4n%2B9\"...=>...\"an=4%2A3%2B9=21\"...and so on\r
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