document.write( "Question 971762: Write an expression for the apparent nth term of the sequence, assume that n begins with 1:
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document.write( "-1,2,7,14,23...
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document.write( "We know that we are to figure out the relationship between n and the terms, but I just can't seem to figure it out. \n" );
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Algebra.Com's Answer #594157 by josgarithmetic(39617)![]() ![]() ![]() You can put this solution on YOUR website! Your dash sign at the start must be an accidental stray character. There is a difference pattern showing.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1 to 2, added 1. \n" ); document.write( "2 to 7, added 5. \n" ); document.write( "7 to 14, added7...........\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now the dash must really be intentional. \n" ); document.write( "-1 to 2, added 3. \n" ); document.write( "2 to 7, added 5. \n" ); document.write( "7 to 14, added 7. \n" ); document.write( "14 to 23, added 9.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-1 to 2, added 3._______-1+2+1, n=2 \n" ); document.write( "2 to 7, added 5._______-1+(2+1)+(2+3), n=3 \n" ); document.write( "7 to 14, added 7.______-1+(2+1)+(2+3)+(2+5), n=4 \n" ); document.write( "14 to 23, added 9._____-1+(2+1)+(2+3)+(2+5)+(2+7), n=5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Each term is based on a summation. \n" ); document.write( "You may be able to finish this on your own. You will need to think carefully about each section shown above.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(2+1+(n-2)2), \n" ); document.write( "(2+(1+(n-2)*2)), represents the last expression added. \n" ); document.write( "Does this work for n=3? n=5? \n" ); document.write( "Yes for n=3; yes for n=5.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "NOTE: The above shown work is a search for the pattern. I DID NOT finish answering; I show there the effort of searching for the pattern. Can YOU finish this? \n" ); document.write( " |