Math Problem Statement

which of these unanswers is false

Which of these answers is false?

Solution

Let's analyze the graph and the multiple-choice answers one by one:

  1. Option A: f(0)=1f(0) = 1
    Looking at the graph at x=0x = 0, the value of f(0)f(0) is approximately 1, as there is no hole or discontinuity. So, Option A is true.

  2. Option B: f(1.5)f(1.5) is undefined
    At x=1.5x = 1.5, the graph shows an open circle, indicating that the function is undefined at this point. So, Option B is true.

  3. Option C: f(1)f(-1) is undefined
    At x=1x = -1, the graph is continuous with no open circles or discontinuities. There is a defined value at x=1x = -1, which is around 2. Hence, Option C is false.

  4. Option D: limx1f(x)=2\lim_{x \to 1} f(x) = 2
    As xx approaches 1 from both sides, the graph tends to the value 2. Therefore, the limit exists and is equal to 2. So, Option D is true.

  5. Option E: limx0+f(x)=1\lim_{x \to 0^+} f(x) = 1
    The right-hand limit as xx approaches 0 from the positive side gives a value of 1. So, Option E is true.

Conclusion:

The false statement is Option C: f(1)f(-1) is not undefined.

Would you like further details on the limit analysis or function behavior?

Here are 5 related questions:

  1. What are the conditions for a function to be continuous at a point?
  2. How is the limit of a function at a point defined?
  3. Can you explain the difference between one-sided and two-sided limits?
  4. What happens if a function has a hole or jump at a certain point?
  5. How do you determine if a function is undefined at a certain point?

Tip: Always check for open circles or breaks in the graph to identify where the function might be undefined.

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Math Problem Analysis

Mathematical Concepts

Limits
Continuity
Graph Analysis

Formulas

-

Theorems

Limit Theorem
Continuity Definition

Suitable Grade Level

Grades 10-12