Concept explainers
(a)
Find the inverse of the given model.
Given information:
When calibrating a spring scale, you need to know how far the spring stretches for various weights. Hooke’s law states that the length a spring stretches is proportional to the weight attached to it. A model for one scale is
Concept used:
In order to find the inverse of a function
Step 1: interchange x and y in the given function
Step 2: solve for y and that will give the required inverse function
Calculation:
Hooke’s law states that the length (
The inverse of
Thus the inverse of the given function
(b)
If you place a weight on the scale and the spring stretches to a total length of 6.5 inches, how heavy is the weight?
7 pounds.
Given information:
When calibrating a spring scale, you need to know how far the spring stretches for various weights. Hooke’s law states that the length a spring stretches is proportional to the weight attached to it. A model for one scale is
Concept used:
In order to find the inverse of a function
Step 1: interchange x and y in the given function
Step 2: solve for y and that will give the required inverse function
Calculation:
Hooke’s law states that the length (
If we place a weight on the scale and the spring stretches to a total length (
Then the weight is -
So, the weight = 7 pounds
Chapter 3 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education