Advance function question

Question

Determine the average rate of change of the function f(x) = 4(x+2)^2 + 1 on the interval -1 <x< 3.

Answer 1

you can determine the average rate of change of f(x) on [-1, 3] by using the definition.

 

f(3) - f(-1) is the change; divide by 4.  In this, you see that I changed the interval from (-1,3).