Math Problem Statement

Evaluate \( \lim_{x \to -6} f(x) \), \( \lim_{x \to -2} f(x) \), and \( \lim_{x \to 4} f(x) \) based on the given graph.

Solution

In this graph, we are asked to evaluate the limits of the function f(x)f(x) at specific points: x=6x = -6, x=2x = -2, and x=4x = 4. Based on the visual features of the graph, we can analyze the behavior of f(x)f(x) as xx approaches these values.

1. limx6f(x)\lim\limits_{x \to -6} f(x)

  • At x=6x = -6, there is a solid point on the curve that indicates that the function is continuous and defined there. The value of f(6)f(-6) appears to be approximately 5.
  • Therefore, limx6f(x)=5\lim\limits_{x \to -6} f(x) = 5.

2. limx2f(x)\lim\limits_{x \to -2} f(x)

  • At x=2x = -2, there is an open circle, meaning the function is not defined exactly at this point. However, the graph approaches a specific value from both sides.
  • As xx approaches 2-2 from both directions, the function approaches f(x)=5f(x) = 5, even though there is an open point.
  • Therefore, limx2f(x)=5\lim\limits_{x \to -2} f(x) = 5.

3. limx4f(x)\lim\limits_{x \to 4} f(x)

  • At x=4x = 4, the function again has an open circle, so the function is not defined at exactly x=4x = 4. However, looking at the behavior from both sides, the graph approaches f(x)=5f(x) = -5.
  • Therefore, limx4f(x)=5\lim\limits_{x \to 4} f(x) = -5.

Summary of Limits:

  • limx6f(x)=5\lim\limits_{x \to -6} f(x) = 5
  • limx2f(x)=5\lim\limits_{x \to -2} f(x) = 5
  • limx4f(x)=5\lim\limits_{x \to 4} f(x) = -5

Would you like further details or have any questions about this analysis?


Here are five related questions to further explore:

  1. What is the definition of a limit, and how is it applied to analyze a graph?
  2. How do open and closed points affect the calculation of limits?
  3. Can you always find limits for points where a function is undefined?
  4. What are one-sided limits, and how would they differ from these results?
  5. How does continuity at a point relate to the value of the limit?

Tip: Always check the behavior of the graph from both sides when determining limits at points with open or undefined values.

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Math Problem Analysis

Mathematical Concepts

Calculus
Limits
Graph Analysis

Formulas

Limit definition: \( \lim_{x \to a} f(x) \) is the value that f(x) approaches as x approaches a.

Theorems

Limit properties
Continuity and discontinuity in graphs

Suitable Grade Level

Grades 11-12