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Lifestream
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For Facebook 'Hacker Way' is way of life http://t.co/4JihqVB4 // a strange meeting between hacking and product [2nplus1]— 13h ago via @2nplus1
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RT @christineburns: Brilliant visualisation: "Who supports these NHS reforms?" http://t.co/RzLt21Zi (Wait for it to load) [2nplus1]— 16h ago via @2nplus1
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RT @guardiantech: Real hero of the Facebook story isn't Zuckerberg, it's the internet http://t.co/i2vmSGVf [2nplus1]— 2d ago via @2nplus1
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— 2d ago via @2nplus1
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— 2d ago via @2nplus1
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RT @speckled_jim: The published Sport ontology: http://t.co/VqPw5aI2. Good work all round. [2nplus1]— February 1st via @2nplus1
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Crime comparison between Llandaff, Cardiff, Caerdydd CF5, UK and Grangetown, Cardiff, Caerdydd CF11, UK | Crime Rates http://t.co/km4ErH11 [2nplus1]— January 28th via @2nplus1
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Archives
Tag Archives: maths
Sum of integers
This is why the sum of n integers is 1/2n(n+1). Someone called Gauss worked it out in his head at school, but I like this picture. If you make a rectangle n wide and n+1 high, and shade half of … Continue reading