document.write( "Question 1075776: A statement Sn about the positive integers is given. Write statements Sk and Sk+1, simplifying Sk+1 completely.\r
\n" ); document.write( "\n" ); document.write( "Sn: 1 + 4 + 7 + . . . + (3n - 2) = n(3n - 1)/2\r
\n" ); document.write( "\n" ); document.write( "pls show step by step answer \n" ); document.write( "

Algebra.Com's Answer #690524 by ikleyn(52803) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "1.  You are given an Arithmetic sequence with the first term 1 and the common difference of 3.\r\n" );
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document.write( "    They ask you about the sum of the first \"n\" terms of the sequence.\r\n" );
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document.write( "2.  On arithmetic progressions and the sums of their terms see the lessons\r\n" );
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document.write( "        - Arithmetic progressions\r\n" );
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document.write( "        - The proofs of the formulas for arithmetic progressions \r\n" );
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document.write( "        - Problems on arithmetic progressions  \r\n" );
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document.write( "        - Word problems on arithmetic progressions\r\n" );
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document.write( "    in this site.\r\n" );
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document.write( "3.  On the method of Mathematical induction and its applications to calculating the sums of Arithmetic progressions see the lesson\r\n" );
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document.write( "        - Mathematical induction and arithmetic progressions\r\n" );
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document.write( "    in this site.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Concretely, the last lesson and its Problem 1 are very close to your problem.\r
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\n" ); document.write( "\n" ); document.write( "So my advise to you is to read the referred lessons, and then you will be able to solve your problem on your own.\r
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\n" ); document.write( "\n" ); document.write( "In this way you will learn everything what is important and related to arithmetic progressions, and, in addition,
\n" ); document.write( "you will learn the method of Mathematical induction.\r
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\n" ); document.write( "\n" ); document.write( "You are at the right place and in good hands.\r
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