Math Problem Statement

Determine the left-hand and right-hand limits of f(x) at x = -6 and check the continuity of f(x) at that point.

Solution

Let's analyze the image and the questions asked in the problem.

We are working with the graph of a function f(x)f(x), and the question seems to involve finding limits and the value of the function at x=6x = -6.

The tasks ask you to:

  1. Determine the left-hand limit limx6f(x)\lim_{x \to -6^-} f(x) from the graph.
  2. Determine the right-hand limit limx6+f(x)\lim_{x \to -6^+} f(x) from the graph.
  3. Determine whether limx6f(x)\lim_{x \to -6} f(x) exists.
  4. Find f(6)f(-6), the actual value of the function at x=6x = -6, if it exists.
  5. Make a conclusion about the continuity of f(x)f(x) at x=6x = -6.

Analyzing the graph at x=6x = -6:

  1. Left-hand limit limx6f(x)\lim_{x \to -6^-} f(x): As xx approaches -6 from the left, the function approaches 3.

  2. Right-hand limit limx6+f(x)\lim_{x \to -6^+} f(x): As xx approaches -6 from the right, the function also approaches 3.

  3. Overall limit limx6f(x)\lim_{x \to -6} f(x): Since both the left-hand and right-hand limits are equal, the limit at x=6x = -6 exists and is equal to 3.

  4. Function value f(6)f(-6): According to the graph, at x=6x = -6, there is a solid point at 5, meaning f(6)=5f(-6) = 5.

  5. Conclusion: The function f(x)f(x) is not continuous at x=6x = -6 because limx6f(x)f(6)\lim_{x \to -6} f(x) \neq f(-6).

Filling in the answers:

  • Left-hand limit: 33
  • Right-hand limit: 33
  • Limit: 33
  • f(6)=5f(-6) = 5
  • The function is discontinuous at x=6x = -6 because limx6f(x)f(6)\lim_{x \to -6} f(x) \neq f(-6).

Would you like more details on limits and continuity or have any questions?

5 Related Questions:

  1. What is the general definition of a limit of a function?
  2. How do you determine if a function is continuous at a specific point?
  3. What is the difference between one-sided limits and two-sided limits?
  4. Can a function have a limit but still be discontinuous at a point? Why?
  5. What are some common types of discontinuities in functions?

Tip:

When analyzing a graph for limits, always check for different behaviors on the left and right side of the point of interest.

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Math Problem Analysis

Mathematical Concepts

Limits
Continuity

Formulas

Left-hand limit: \lim_{x \to a^-} f(x)
Right-hand limit: \lim_{x \to a^+} f(x)
Two-sided limit: \lim_{x \to a} f(x)
Definition of continuity: \lim_{x \to a} f(x) = f(a)

Theorems

Limit definition: The value that f(x) approaches as x approaches a point.
Continuity theorem: A function is continuous at x = a if the left-hand limit, right-hand limit, and f(a) are equal.

Suitable Grade Level

Grades 11-12