Question

Given the functions, f(x) =2x^2 - x + 1, calculate the average rate of change of the function from x = 1 to x = 3.

1. 7
2. 14
3. 16
4. 28

Answer 1

f(x) = 2x^2 - x + 1

f'(x) = 4x - 1

Well :

f'(1) = 4 - 1 = 3

f'(3) = 12 - 1 = 11

3+11/2 = 7