Textbook ExpertVerified Tutor
11 Nov 2021
Given information
Note that the function,.
The objective is to find all the points on the graph at which the tangent line is horizontal recollect that ,
(1) The slope of horizontal tangent lines is .
(2) If and are differentiable function,then .
Step-by-step explanation
Step 1.
First, differentiate the function.
with respect to .