Member since April 8, 2012
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Sun 8 Apr, 2012 11:22 pm -
let x=1000 ,then we have:
(2x+8){[1/x + 1/(x+9)]+ [1/(x+1) + 1/(x+8)]+ [1/(x+2) + 1/(x+7)]+-----------------+[1/(x+4) + 1/(x+5)]}<5(2x+8)(2x+9)/(x^2 +9x)... (
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Sun 8 Apr, 2012 08:37 pm -
please prove it without using any computer or calculator.
Albert (
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Sun 8 Apr, 2012 09:56 am -
Hi MontereyJack:
I am sorry ,your proof is not correct.
altogether we have 10 terms instead of 9 terms
Albert (
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Sun 8 Apr, 2012 09:09 am -
prove :2008[(1/1000)+(1/1001)+(1/1002)+ ..............+(1/1009)]<20
I deeply appreciated your answer.
Post By Albert.Teng from Taiwan (
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