Question

write any 2 properties of differentiation
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Answer 1

Δy=f(x+Δx)− f(x). The derivative of the function y=f(x) at the point x is defined as the limit of the ratio Δy/Δx as Δx→0: y′=f′(x)=dydx= df(x)dx= limx→0ΔyΔx= limx→0f(x+Δx)−f(x)Δx.