(10\times11) + ... $

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6 events

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May 26, 2010 at 22:15	comment	added	Max Lonysa Muller		No.. I didn't realize that. I thought he added 1/5x6, 1/7x8, 1/10x11 etc., which is what I would've liked. I had some doubts, but Michael Greenblatt convinced me.
May 26, 2010 at 21:59	comment	added	Charles Matthews		You realise that Alvarez adds 1/5x6, 1/6x7, 1/7x8, 1/10x11, 1/11x12 etc.?
May 26, 2010 at 21:19	comment	added	Max Lonysa Muller		I'm sorry I didn't formulate the series in sigma notation, I'm not very familiar with LaTeX and I more or less forgot to listen to your request. Of course I know your speaking in 'matematical language', I was thinking more of symbols and an exact proof. I was just interested in your approach and I tried to encourage you to expand your answer, as mister Alvarez probably gave a nice and correct answer, but not a very 'clean proof'. I think it's nice to have more than one solution to a problem, but if you don't want to type any more mathematical notation anymore, I understand.
May 26, 2010 at 20:59	comment	added	Charles Matthews		I have to say that I'm not going to type more mathematical notation here, given your reaction above. It is a bit ironic that you ask for an explanation in mathematical language. It is not clear to me whether this is a challenge problem to which you already know the answer, but I'm not highly motivated yet (whether it is or not). You have ignored the request I made to formulate the series in sigma notation: "..." can waste a lot of time, as the discussion shows.
May 26, 2010 at 20:10	comment	added	Max Lonysa Muller		I'm not sure if I have understood your 'classical approach... Could you describe what you're doing in 'mathematical language?'. And why do you think Euler could handle this question? Has he evaluated this series already? Please ellaborate on your methods, anyway!
May 26, 2010 at 19:29	history	answered	Charles Matthews	CC BY-SA 2.5