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यदि 1/1^2+1/2^2+1/3^2+1/4^2+...oo=pi^2/6...

यदि `1/1^2+1/2^2+1/3^2+1/4^2+...oo=pi^2/6`,तब `1/2^2+1/4^2+1/6^2+1/8^2+...oo` का मान होगा

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If 1/1^2+1/2^2+1/3^2+...oo=pi^2/6 then value of 1-1/2^2+1/3^2-1/4^2+...oo=

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1/(2^2-1)+1/(4^2-1)+1/(6^2-1)+...oo=1/2

1/(2!)-1/(3!)+1/(4!) .....oo =

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