BuyFind

Single Variable Calculus: Concepts...

4th Edition
James Stewart
Publisher: Cengage Learning
ISBN: 9781337687805
BuyFind

Single Variable Calculus: Concepts...

4th Edition
James Stewart
Publisher: Cengage Learning
ISBN: 9781337687805

Solutions

Chapter 1, Problem 5P
To determine

To sketch: The function f(x)=|x24|x|+3|.

Expert Solution

Explanation of Solution

Given:

The function is f(x)=|x24|x|+3|.

Result used:

Even function:

A function is even if and only if f(x)=f(x) for all x in the domain of f.

Calculation:

Consider the function f(x)=|x24|x|+3|

Observe that x2=(x)2and |x|=|x|

Therefore, f(x)=f(x) and thus the given function is an even function.

Thus, for all x0.

f(x)=|x24x+3|=(x1)(x3)

The function can be split into four different cases as follows:

Case (i):

For 0x<1,and x3

f1(x)=x24x+3

To sketch: Use the online graphing calculator and draw the graph of the function: f1(x)=x24x+3 as shown below in Figure (1)

Single Variable Calculus: Concepts and Contexts, Enhanced Edition, Chapter 1, Problem 5P , additional homework tip  1

Case (ii):

For 1x<3

f1(x)=(x24x+3)

To sketch: Use the online graphing calculator and draw the graph of the function: f1(x)=(x24x+3) as shown below in Figure (2)

Single Variable Calculus: Concepts and Contexts, Enhanced Edition, Chapter 1, Problem 5P , additional homework tip  2

Case (iii):

For 1<x0,x3

f1(x)=x2+4x+3

To sketch: Use the online graphing calculator and draw the graph of the function: f1(x)=x2+4x+3 as shown below in Figure (3)

Single Variable Calculus: Concepts and Contexts, Enhanced Edition, Chapter 1, Problem 5P , additional homework tip  3

Case (iv):

For 3<x1

f2(x)=(x2+4x+3)

To sketch: Use the online graphing calculator and draw the graph of the function: f2(x)=(x2+4x+3) as shown below in Figure (4)

Single Variable Calculus: Concepts and Contexts, Enhanced Edition, Chapter 1, Problem 5P , additional homework tip  4

Combine all the graphs in figure 1, 2, 3 and 4 as shown below in Figure 5

To sketch: Use the online graphing calculator and draw the graph of the function: f(x)=|x24|x|+3| as shown below in Figure (5)

Single Variable Calculus: Concepts and Contexts, Enhanced Edition, Chapter 1, Problem 5P , additional homework tip  5

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