got 2 series.

1.

1^{2}- 2^{2}+ 3^{2}- 4^{2}+ ................. 99^{2}- 100^{2}

(ok those are just squares)

2.

1.1! + 2.2! + ....... 50.50!

need to find sum...

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- April 30th 2009, 02:11 AMadhyetahelp finding sum of series
got 2 series.

1.

1^{2}- 2^{2}+ 3^{2}- 4^{2}+ ................. 99^{2}- 100^{2}

(ok those are just squares)

2.

1.1! + 2.2! + ....... 50.50!

need to find sum... - April 30th 2009, 04:07 AMpickslides
- April 30th 2009, 05:22 AMSoroban
Hello, adhyeta!

Are you familiar with these summation formulas?

. .

. .

Quote:

. .

Hence: .

. .

- April 30th 2009, 07:10 AMadhyeta
- April 30th 2009, 03:11 PMpickslides
- April 30th 2009, 04:04 PMJester
- April 30th 2009, 06:16 PMadhyeta
- May 3rd 2009, 08:16 AMadhyeta