document.write( "Question 1198601: What is the sum Σ from n=1 to infinity for the expression (-1)^n+1 (1/3n).\r
\n" ); document.write( "\n" ); document.write( "The correct answer is one of the following. Which one?\r
\n" ); document.write( "\n" ); document.write( "A) 13/180\r
\n" ); document.write( "\n" ); document.write( "B) 7/36\r
\n" ); document.write( "\n" ); document.write( "C) -13/180\r
\n" ); document.write( "\n" ); document.write( "D) 25/36\r
\n" ); document.write( "\n" ); document.write( "E) -7/36
\n" ); document.write( "

Algebra.Com's Answer #832225 by greenestamps(13200)\"\" \"About 
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) --> \"%28-1%29%5En%2B1+%281%2F3n%29\"

\n" ); document.write( "Other possibilities for what the expression is really supposed to be....

\n" ); document.write( "(-1)^(n+1) (1/3n) --> \"%28-1%29%5E%28n%2B1%29+%281%2F3n%29\"

\n" ); document.write( "(-1)^(n+1) ((1/3)n) --> \"%28-1%29%5E%28n%2B1%29+%28%281%2F3%29n%29\"

\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.

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