document.write( "Question 357898: Hi,
\n" ); document.write( "having some problems with the following question any chance some one could step by step walk me though it please \r
\n" ); document.write( "\n" ); document.write( "Q. find a formula for the sum of\r
\n" ); document.write( "\n" ); document.write( "x^2+x^6+x^10+...+x^2+4n+...+x^42\r
\n" ); document.write( "\n" ); document.write( "What will be the sum of the series when x = 1?\r
\n" ); document.write( "\n" ); document.write( "Also finding this one tricky to:\r
\n" ); document.write( "\n" ); document.write( "Q. obtain the sum of the infinite geometric progression\r
\n" ); document.write( "\n" ); document.write( "2-2/3+2/9-2/27+...\r
\n" ); document.write( "\n" ); document.write( "Any help would be very helpful\r
\n" ); document.write( "\n" ); document.write( "Thanks :)
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Algebra.Com's Answer #255483 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"T=sum%28x%5E%282%2B4i%29%2Ci=0%2CN%29\"
\n" ); document.write( "Find the number of terms.
\n" ); document.write( "\"2%2B4N=42\"
\n" ); document.write( "\"4N=40\"
\n" ); document.write( "\"N=10\"
\n" ); document.write( "Since the terms start at 0 and not 1, then there are 11 terms altogether.
\n" ); document.write( "Eleven terms, each having a value of 1.
\n" ); document.write( "\"S=11%281%29\"
\n" ); document.write( "\"highlight%28S=11%29\"
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\n" ); document.write( "\"S=2%2B2%2Asum%28%28-1%2F3%29%5En%2Cn=1%2Cinfinity%29\"
\n" ); document.write( "\"S=2%2B2%2A%28-%28%281%2F3%29%2F%281%2B1%2F3%29%29%29\"
\n" ); document.write( "\"S=2%2B2%2A%28-%28%281%2F3%29%2F%284%2F3%29%29%29\"
\n" ); document.write( "\"S=2-2%2A%281%2F4%29\"
\n" ); document.write( "\"S=2-1%2F2\"
\n" ); document.write( "\"highlight%28S=3%2F2%29\"
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