Chapter 5: Problem 35
Use transformations of the graph of \(y=x^{4}\) or \(y=x^{5}\) to graph each function. $$ f(x)=(x-1)^{5}+2 $$
Short Answer
Expert verified
Shift the graph of \( y=x^{5} \) 1 unit to the right and 2 units up.
Step by step solution
01
Identify the Base Function
The base function is given as either \( y=x^{4} \) or \( y=x^{5} \). Here, the base function that closely resembles \( f(x) \) is \( y=x^{5} \).
02
Horizontal Shift
Notice that in the function \( f(x)=(x-1)^{5}+2 \), the term \( (x-1) \) indicates a horizontal shift. The graph of \( y=x^{5} \) is shifted to the right by 1 unit, since \( x-1 \) makes the graph move one unit to the right.
03
Vertical Shift
The term \( +2 \) in \( f(x)=(x-1)^{5}+2 \) indicates a vertical shift. The entire graph is shifted upwards by 2 units.
04
Combine Transformations
Combine both transformations: Shift the graph of \( y=x^{5} \) 1 unit to the right and 2 units upwards. This gives the final graph of the function \( f(x)=(x-1)^{5}+2 \).
05
Plot the Graph
Plot the base graph \( y=x^{5} \). Then apply the horizontal shift by moving each point 1 unit to the right. Finally, apply the vertical shift by moving each point 2 units up. This results in the graph of \( f(x) \).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Horizontal Shift
In graph transformations, a horizontal shift changes the position of the graph along the x-axis. To understand this better, let’s look at our function:
The base function is given by: \ f(x) = x^{5}.
When you see a term inside the function like (x-1), it indicates a horizontal shift. Specifically, the function \ (f(x)) = (x-1)^{5} means moving the graph one unit to the right.
This happens because x-1 equals zero when x=1, so the zero of the function (and every other point) moves one step to the right. If it were (x+1), the graph would shift one unit to the left.
The general rule can be summarized as:
• \( x - h \) results in a shift of h units to the right.
• \( x + h \) results in a shift of h units to the left.
The base function is given by: \ f(x) = x^{5}.
When you see a term inside the function like (x-1), it indicates a horizontal shift. Specifically, the function \ (f(x)) = (x-1)^{5} means moving the graph one unit to the right.
This happens because x-1 equals zero when x=1, so the zero of the function (and every other point) moves one step to the right. If it were (x+1), the graph would shift one unit to the left.
The general rule can be summarized as:
• \( x - h \) results in a shift of h units to the right.
• \( x + h \) results in a shift of h units to the left.
Vertical Shift
A vertical shift moves the graph up or down along the y-axis. This is shown by terms added or subtracted outside the function. Let’s consider our example function again:
f(x) = (x-1)^{5} + 2.
The term +2 outside the function tells us to move the graph up by 2 units.
This means that every point on the graph of the function y = x^{5} is shifted upward by 2 units.
Here are key points to remember about vertical shifts:
• Adding a value outside the function, like (x) + c, shifts the graph c units up.
• Subtracting a value outside the function, like (x) - c, shifts the graph c units down.
Combining both horizontal and vertical shifts, the graph of f(x) = (x-1)^{5} + 2 moves one unit to the right and two units up from the base graph y=x^{5}.
f(x) = (x-1)^{5} + 2.
The term +2 outside the function tells us to move the graph up by 2 units.
This means that every point on the graph of the function y = x^{5} is shifted upward by 2 units.
Here are key points to remember about vertical shifts:
• Adding a value outside the function, like (x) + c, shifts the graph c units up.
• Subtracting a value outside the function, like (x) - c, shifts the graph c units down.
Combining both horizontal and vertical shifts, the graph of f(x) = (x-1)^{5} + 2 moves one unit to the right and two units up from the base graph y=x^{5}.
Base Function
The concept of a base function is foundational in graph transformations. The base function provides the original graph before any transformations. In this exercise, our base function is:
y = x^{5}.
This base function is a simple polynomial curve, and understanding its shape helps us visualize the impacts of transformations.
Important characteristics of base functions include:
• Knowing the basic shape (for y = x^{5}, it’s a curve starting from the bottom-left and extending to the top-right).
• Recognizing critical points like intercepts and symmetry.
In this example, our task was to take the base function y = x^{5} and apply both horizontal and vertical shifts to find and graph the transformed function f(x) = (x-1)^{5} + 2. By understanding and practicing the transformations on the base function, you can handle any complex function transformations confidently.
y = x^{5}.
This base function is a simple polynomial curve, and understanding its shape helps us visualize the impacts of transformations.
Important characteristics of base functions include:
• Knowing the basic shape (for y = x^{5}, it’s a curve starting from the bottom-left and extending to the top-right).
• Recognizing critical points like intercepts and symmetry.
In this example, our task was to take the base function y = x^{5} and apply both horizontal and vertical shifts to find and graph the transformed function f(x) = (x-1)^{5} + 2. By understanding and practicing the transformations on the base function, you can handle any complex function transformations confidently.