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Ch. 2 - Limits and Continuity
Hass - Thomas' Calculus 15th Edition
Hass15th EditionThomas' CalculusISBN: 9780137616077Not the one you use?Change textbook
Chapter 2, Problem 2.1.22

[Technology Exercise] 22. Make a table of values for the function at the points x=1.2, x=11/10, x=101/100, x=1001/1000, x=10001/10000, and x = 1.
         
a. Find the average rate of change of F(x) over the intervals [1,x] for each x≠1 in your table.
         
b. Extending the table if necessary, try to determine the rate of change of F(x) at x = 1.

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1
First, identify the function F(x) that you need to evaluate at the given points. If the function is not provided, assume a general form or use a specific function from your textbook or exercise.
Create a table with two columns: one for the x-values (1.2, 11/10, 101/100, 1001/1000, 10001/10000, and 1) and another for the corresponding F(x) values. Calculate F(x) for each x-value using the function.
To find the average rate of change of F(x) over the intervals [1,x] for each x≠1, use the formula for the average rate of change: (F(x) - F(1)) / (x - 1). Compute this for each x-value in your table.
Extend the table if necessary by choosing x-values closer to 1, such as 100001/100000, to observe the behavior of the average rate of change as x approaches 1.
Analyze the pattern of the average rate of change as x approaches 1. This will help you determine the instantaneous rate of change of F(x) at x = 1, which is the derivative of F(x) at x = 1. Consider using limits to find this rate of change if needed.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Average Rate of Change

The average rate of change of a function over an interval [a, b] is calculated as the difference in the function's values at the endpoints divided by the difference in the input values. Mathematically, it is expressed as (F(b) - F(a)) / (b - a). This concept is crucial for understanding how a function behaves over a specified range and is foundational for analyzing functions in calculus.
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Limit and Instantaneous Rate of Change

The instantaneous rate of change of a function at a point is defined as the limit of the average rate of change as the interval shrinks to that point. This is formally represented using the derivative, where the derivative of F at x = a is given by F'(a) = lim (h -> 0) [(F(a + h) - F(a)) / h]. Understanding this concept is essential for determining how a function behaves at specific points.
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Function Evaluation

Function evaluation involves substituting a specific value into a function to determine its output. For example, if F(x) is a function, evaluating F(1) means finding the value of the function when x equals 1. This process is fundamental in creating tables of values and calculating rates of change, as it provides the necessary data points for analysis.
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