# Chapter 2 - Differentiation - 2.1 Exercises: 4

a.) $\gt$ b.) $\lt$

#### Work Step by Step

a.) Because the slope from the points (1,2), and (4,5) is greater than slope between (4,5) and (3,4.5), Then the sign used is $\gt$ b.) Because the tangent slope at $f'(1)$ is greater than the slope between the points (4,5) and (1,2) Then the sign used is $\lt$

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