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Evaluate f(x+h)-f(x)/h and simplify if f(x)=x^2-2x ...?
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Evaluate f(x+h)-f(x)/h and simplify if f(x)=x^2-2x ...?

User Tim Nuwin
by
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1 Answer

4 votes

(f(x+h)-f(x))/(h)= \\ = ((x+h) ^(2)-2(x+h)-( x^(2) -2x) )/(h)= \\ = ( x^(2) +2hx+ h^(2)-2x-2h+2x )/(h)= \\ = (2hx+ h^(2)-2h )/(h)= \\ = (h(2x+h-2))/(h)=
= 2 x + h - 2
User Mud
by
7.3k points
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