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Mathematics 9 Online
OpenStudy (anonymous):

I need help with differention of a power-series. I was watching this video online and I dont know where he got (x^2/2) I know where the x^2 came from but not the 1/2 to make (x^2/2) this happens at about 3:45 secounds inot the viedo. Help will be greatly appreciated. http://www.youtube.com/watch?v=qPl9nr8my2Q

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