Math Problem Statement

Analyze the function f(x) and answer questions about the limits and function values when x = -3 based on the graph provided.

Solution

Let's analyze the graph to answer the questions about the function f(x)f(x) when x=3x = -3.

  1. Left-hand limit as xx approaches -3: We need to observe the value that f(x)f(x) approaches as xx approaches -3 from the left (i.e., as x3x \to -3^{-}).

    • As xx approaches -3 from the left, the curve approaches a value of 4. Thus, limx3f(x)=4\lim_{x \to -3^-} f(x) = 4.
  2. Right-hand limit as xx approaches -3: Next, we observe the behavior of f(x)f(x) as xx approaches -3 from the right (i.e., as x3+x \to -3^{+}).

    • As x3+x \to -3^+, the graph shows that f(x)f(x) approaches 2. Therefore, limx3+f(x)=2\lim_{x \to -3^+} f(x) = 2.
  3. Overall limit as ( x \to -3: The overall limit exists only if both the left-hand and right-hand limits are equal. Since limx3f(x)=4\lim_{x \to -3^-} f(x) = 4 and limx3+f(x)=2\lim_{x \to -3^+} f(x) = 2, the two limits are not equal. Therefore, the overall limit does not exist (DNE).

  4. The value of the function at x=3x = -3: From the graph, we can directly observe the value of f(x)f(x) at x=3x = -3. There is a filled dot on the graph at x=3x = -3 with a corresponding yy-value of 3. Hence, f(3)=3f(-3) = 3.

Final answers:

limx3f(x)=4\lim_{x \to -3^-} f(x) = 4 limx3+f(x)=2\lim_{x \to -3^+} f(x) = 2 limx3f(x)=DNE\lim_{x \to -3} f(x) = \text{DNE} f(3)=3f(-3) = 3

Would you like more details on any step or further clarification?

Here are five relative questions:

  1. What happens to the limit if the left-hand and right-hand limits are equal?
  2. How do discontinuities affect the limits of a function?
  3. What are the differences between limits and actual function values?
  4. Can a function be continuous but have a limit that does not exist?
  5. How can we calculate limits for more complex functions analytically?

Tip: When a function has a jump discontinuity (as seen here at x=3x = -3), the overall limit does not exist due to the mismatch between the left-hand and right-hand limits.

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Math Problem Analysis

Mathematical Concepts

Limits
Left-hand limit
Right-hand limit
Function Value
Discontinuities

Formulas

lim_{x \to c^-} f(x)
lim_{x \to c^+} f(x)
lim_{x \to c} f(x)
f(c)

Theorems

Limit Theorem
Jump Discontinuity

Suitable Grade Level

High School or Early College (Grades 11-12, or Calculus 1)