How do you find the average rate of change for the function $f(x)= 3x^2 - 2x$ on the indicated intervals [1,2]?

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Answer 1 · 2015-09-09T07:02:34

The average rate can be defined as follows

$(Δf)/(Δx)=(f(b)-f(a))/(b-a)$ where a=1 and b=2

So we have that

$(Δf)/(Δx)=(f(2)-f(1))/(2-1)=(8-1)/(1)=7$

How do you find the average rate of change for the function f(x)= 3x^2 - 2x f(x)= 3x^2 - 2x on the indicated intervals [1,2]?