2. Assume that for x # c (in some open interval containing c), I(x) < f(x) < u (x) and that lim 1(x) = lim u(x) = L. Then lim f(x) exists and lim f(x) = L
2. Assume that for x # c (in some open interval containing c), I(x) < f(x) < u (x) and that lim 1(x) = lim u(x) = L. Then lim f(x) exists and lim f(x) = L
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
Related questions
Question
Expert Solution
Step 1 Given
and that
Now to show that exists and
Here use definition of limit
Let be given. We are done if we find a such that
whenever
Since by definition of limits, there exits some such that
for all .
Thus ,
for all
So we get
for all ----------(1)
Similarly , since , by definition of limits, there exits some such that
for all -----------(2)
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