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Concept explainers
To find: the interval in which the person’s heart is form 50% to 85% of the maximum heart rate.
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Answer to Problem 96E
The required interval
Explanation of Solution
Given information:
Given
A 40 year old
Calculation:
The maximum heart rate in beats per minute is given by
The sedentary person should strive to increase his or her heart rate to at least 50% of the maximum heart rate. This means that the least increase in the maximum heart rate is 50% of the maximum heart rate, that is
Now, a healthy person should strive to increase his heart rate to at most 85% of the maximum heart rate. This means that the maximum increase in the maximum heart rate is at most 85% of the maximum heart rate, that is
Combining the previous two equations, we get
For a 20 year old, the maximum heart rate is given by the equation
Here
Therefore,
For expressing the interval range of the target heart rate for a 40 year ols,
We put the value of
This is the required interval.
Chapter A Solutions
Precalculus with Limits
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning
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