document.write( "Question 812881: So I understand how summation and series sequences work but I came across a homework problem that stumped me. I can generally write a sum in summation notation really quickly but I need help with the following.\r
\n" ); document.write( "\n" ); document.write( "Write each sum in summation notation: 1-2+3-4+...+(-50)\r
\n" ); document.write( "\n" ); document.write( "I get that x=1 goes under the sigma notation and 50 goes above it but I am not able to figure out what the formula is. If you could help me I would greatly appreciate it. Thank You \n" ); document.write( "

Algebra.Com's Answer #489384 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi
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document.write( "Write each sum in summation notation: 1-2+3-4+...+(-50)
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document.write( "When dealing with alternating + and - numbers,  often used
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