Math Problem Statement

Select all statements below about the function f(x) that you agree with, based on the provided graph.

Solution

Let's analyze the graph and the given statements step-by-step.

  1. f(2)f(2) is defined.

    • This means that there is a defined value of ff at x=2x = 2. In the graph, at x=2x = 2, there is a hole (open circle) which indicates that the function is not defined there. Hence, f(2)f(2) is not defined.
  2. limx2f(x)\lim\limits_{x \to 2} f(x) exists.

    • This refers to the limit of the function as xx approaches 2 from both sides. From the graph, as xx approaches 2 from the left and right, f(x)f(x) approaches the same value (looks like 11). Hence, the limit limx2f(x)\lim\limits_{x \to 2} f(x) exists.
  3. limx2f(x)=f(2)\lim\limits_{x \to 2} f(x) = f(2).

    • For this to be true, both the limit as xx approaches 2 and f(2)f(2) must exist and be equal. From the previous analysis, f(2)f(2) is not defined, so this statement is false.
  4. The function is continuous at x=2x = 2.

    • A function is continuous at x=2x = 2 if f(2)f(2) is defined, limx2f(x)\lim\limits_{x \to 2} f(x) exists, and limx2f(x)=f(2)\lim\limits_{x \to 2} f(x) = f(2). Since f(2)f(2) is not defined, the function is not continuous at x=2x = 2.
  5. The function is not continuous at x=2x = 2.

    • Since f(2)f(2) is not defined, the function is indeed not continuous at x=2x = 2.

Conclusion:

The correct statements are:

  • limx2f(x)\lim\limits_{x \to 2} f(x) exists.
  • The function is not continuous at x=2x = 2.

Would you like more details or have any other questions? Here are some related questions you might be interested in:

  1. What are the different types of discontinuities in a function?
  2. How do we find the limit of a function analytically?
  3. What is the definition of continuity for a function?
  4. Can a function have a limit at a point where it is not defined?
  5. What is the graphical interpretation of a limit?

Tip: Remember, a hole in the graph indicates that the function is not defined at that point, but it does not necessarily affect the existence of the limit.

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Math Problem Analysis

Mathematical Concepts

Limits
Continuity
Function Definition
Discontinuity

Formulas

Limit: lim_{x→c} f(x)
Continuity: A function is continuous at x = c if f(c) is defined and lim_{x→c} f(x) = f(c)

Theorems

Definition of continuity
Limit existence and evaluation

Suitable Grade Level

Grades 11-12 (High School Calculus)