document.write( "Question 1198601: What is the sum Σ from n=1 to infinity for the expression (-1)^n+1 (1/3n).\r
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document.write( "The correct answer is one of the following. Which one?\r
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document.write( "A) 13/180\r
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document.write( "B) 7/36\r
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document.write( "C) -13/180\r
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document.write( "D) 25/36\r
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document.write( "E) -7/36 \n" );
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Algebra.Com's Answer #832225 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Not clear. Use parentheses. \n" ); document.write( "The expression as you show it: \n" ); document.write( "(-1)^n+1 (1/3n) --> \n" ); document.write( "Other possibilities for what the expression is really supposed to be.... \n" ); document.write( "(-1)^(n+1) (1/3n) --> \n" ); document.write( "(-1)^(n+1) ((1/3)n) --> \n" ); document.write( "All of those possibilities either do not converge or converge but not to any of the given answer choices. \n" ); document.write( "Re-post, showing the problem clearly. \n" ); document.write( " \n" ); document.write( " |