document.write( "Question 1158704: Find the first six partial sums S1, S2, S3, S4, S5, S6 of the sequence whose nth term is given.
\n" ); document.write( "1, 5, 9, 13, . . .\r
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Algebra.Com's Answer #781686 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "Find the first six partial sums $\"S1\"$ , $\"S2\"$ , $\"S3\"$ , $\"+S4\"$ , $\"S5\"$ , $\"S6\"$ of the sequence whose nth term is given.
\n" ); document.write( " $\"1\"$ , $\"5\"$ , $\"+9\"$ , $\"13\"$ , . . .\r
\n" ); document.write( "\n" ); document.write( "as you can see, common difference is $\"4\"$
\n" ); document.write( " $\"d=5-1=4\"$
\n" ); document.write( " $\"d=9-5=4\"$ \r
\n" ); document.write( "\n" ); document.write( "so, next term will be $\"17\"$ , then comes $\"+21\"$ , $\"25\"$ , and so on\r
\n" ); document.write( "\n" ); document.write( " $\"S1=1\"$
\n" ); document.write( " $\"S2=1%2B5=6\"$
\n" ); document.write( " $\"S3=1%2B5%2B9=15\"$
\n" ); document.write( " $\"+S4=1%2B5%2B9%2B13=28\"$
\n" ); document.write( " $\"S5=1%2B5%2B9%2B13%2B17=45\"$
\n" ); document.write( " $\"S6=1%2B5%2B9%2B13%2B17%2B21=66\"$ \r
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