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Old 04-29-2013   #1
choiminho
 
Join Date: Apr 2013
Posts: 1
Question First Principle of Derivative and Power Rule

using the first principle of differentiation, find the first derivatives of

1.f(x) = 3/x^2

2. 1/(sqrt x)^3

-i don't know how to using limit to solve this. Please help me.
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