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 Topic: first principles
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 The derivative of sin(x) 2014-04-26 From Lucky:f(x)=Sin(x), by first principle its f'(x)...show me how to solve such problem.Answered by Penny Nom. The derivative of x^-(1/2) 2012-01-14 From Eric:I have an problem figuring out the derivative of the negative square root of x i.e. x^-(1/2) using the first principle. Could someone please show me? Thanks in advance!Answered by Harley Weston. Differentiate x^(1/3) using first principles 2007-09-14 From Sheila:our teacher gave us this question as a challenge and even he couldnt figure it out: Differentiate x^(1/3) [aka the cube root of x] using first principles. i know the answer is 1/(3.x^2/3), but how is it possible using first principles?Answered by Harley Weston.

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