Question

How do you find the average rate of change of `f(x)=x^2 + x` over [1,3]?

Answer 1

5

Explanation:

`f(1)= 1^2 +1 =2`

`f(3)= 3^2 +3=12`

Average rate of change= `(f(3)-f(1))/ (3-1) = 10/2= 5`