To Identify: The curves
Answer to Problem 42E
In the given graph,
Explanation of Solution
Graph:
The given graph is shown as in Figure 1,
Observation:
Observe the graph of c and d carefully.
The point where
Recall that the derivative of a function is zero where the function has a horizontal tangent.
Thus,
Observe the graph of b and c carefully.
The slope of c has negative value when
Thus,
Observe the graph of b and a carefully.
The slope of b has positive value when
Thus,
From (1), (2) and (3), it is concluded that,
Thus,
Chapter 2 Solutions
Single Variable Calculus: Concepts and Contexts, Enhanced Edition