Question: Refer to the following figure.
![2031_77.png](https://secure.tutorsglobe.com/CMSImages/2031_77.png)
Refer to Question.
a. Find an expression for the average rate of change of f over the interval [2, 2 + h].
b. Find an expression for the instantaneous rate of change of f at 2.
c. Compare your answers for part (a) and (b) with those of Question.
Question: Refer to the following figure.
![1480_78.png](https://secure.tutorsglobe.com/CMSImages/1480_78.png)
Let P(2, f(2)) and Q(2 + h, f(2 + h)) be points on the graph of a function f.
a. Find an expression for the slope of the secant line passing through P and Q.
b. Find an expression for the slope of the tangent line passing through P.