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Ch. 2 - Limits
Briggs - Calculus: Early Transcendentals 3rd Edition
Briggs3rd EditionCalculus: Early TranscendentalsISBN: 9780136847243Not the one you use?Change textbook
All textbooksBriggs 3rd EditionCh. 2 - LimitsProblem 17l
Chapter 2, Problem 17l

Use the graph of f in the figure to find the following values or state that they do not exist. If a limit does not exist, explain why. <IMAGE>


l. limx→2f(x)\(\lim\)_{x\(\to\)2}f\(\left\)(x\(\right\))

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Examine the graph of the function \( f(x) \) around \( x = 2 \).
Check the behavior of \( f(x) \) as \( x \) approaches 2 from the left (\( x \to 2^- \)).
Check the behavior of \( f(x) \) as \( x \) approaches 2 from the right (\( x \to 2^+ \)).
Compare the left-hand limit and the right-hand limit to determine if they are equal.
If both one-sided limits are equal, the limit \( \lim_{x\to2}f(x) \) exists and is equal to that common value; otherwise, state that the limit does not exist.

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Key Concepts

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

Limits

A limit describes the behavior of a function as the input approaches a certain value. It is essential for understanding continuity and the behavior of functions near points of interest. For example, the limit of f(x) as x approaches 2 indicates what value f(x) is approaching as x gets closer to 2, which can be crucial for determining the function's behavior at that point.
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One-Sided Limits

Continuity

A function is continuous at a point if the limit as x approaches that point equals the function's value at that point. This concept is vital for determining whether a limit exists. If there is a jump, hole, or asymptote at the point in question, the function may not be continuous, leading to a limit that does not exist.
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Intro to Continuity

Existence of Limits

The existence of a limit requires that the left-hand limit and right-hand limit at a point are equal. If these two limits differ or if one of them does not exist, then the overall limit does not exist. Understanding this concept is crucial for analyzing the graph of f and determining the limit as x approaches 2.
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Cases Where Limits Do Not Exist
Related Practice
Textbook Question

Use the graph of f in the figure to find the following values or state that they do not exist. If a limit does not exist, explain why. <IMAGE>


d. limx→1f(x)\(\lim\)_{x\(\to\)1}f\(\left\)(x\(\right\))

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Textbook Question

Use the graph of f in the figure to find the following values or state that they do not exist. If a limit does not exist, explain why. <IMAGE>


a. f(1)

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Textbook Question

Use the graph of g(x) in the figure to find the following values or state that they do not exist. If a limit does not exist, explain why. <IMAGE>

limx→4g(x)\(\lim\)_{x\(\to\)4}g\(\left\)(x\(\right\))

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Textbook Question

Determine the following limits. 

lim t→∞ (5t2 + t sin t) / t2

Textbook Question

Use the graph of g(x)g(x) in the figure to find the following values or state that they do not exist. If a limit does not exist, explain why. <IMAGE>


limx→2g(x)\(\lim\)_{x\(\to\)2}g\(\left\)(x\(\right\))

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Textbook Question

Use the graph of f in the figure to find the following values or state that they do not exist. If a limit does not exist, explain why. <IMAGE>


h. limx→3f(x)\(\lim\)_{x\(\to\)3}f\(\left\)(x\(\right\))

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