Math Problem Statement

Classify the statement as either true or false.

If

ModifyingBelow lim With x right arrow 9

​F(x)

​exists, then F

could be continuous

at

xequals

9

.

Solution

The statement is true.

Here's why:

If the limit of F(x)F(x) as xx approaches 9 exists, then F(x)F(x) could potentially be continuous at x=9x = 9. However, for F(x)F(x) to be continuous at x=9x = 9, three conditions must be met:

  1. F(9)F(9) must be defined.
  2. limx9F(x)\lim_{{x \to 9}} F(x) must exist.
  3. limx9F(x)=F(9)\lim_{{x \to 9}} F(x) = F(9).

So, the existence of the limit limx9F(x)\lim_{{x \to 9}} F(x) means that continuity is possible, but other conditions (like F(9)F(9) being defined and equal to the limit) must also be satisfied for F(x)F(x) to be continuous at x=9x = 9.

Would you like more details or have any questions?

Here are 5 related questions:

  1. What are the formal conditions for a function to be continuous at a point?
  2. Can a function be continuous if its limit exists but is not equal to its function value at the point?
  3. How can we determine the existence of a limit at a point?
  4. What is the difference between one-sided and two-sided limits?
  5. Can a function have a limit at a point where it is not defined?

Tip: Continuity at a point requires the function's limit at that point to match the function's actual value at that point.

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Math Problem Analysis

Mathematical Concepts

Limits
Continuity

Formulas

\lim_{{x \to a}} f(x) = L
Definition of continuity at a point: \(f(a)\) is defined, \(\lim_{{x \to a}} f(x)\) exists, and \(\lim_{{x \to a}} f(x) = f(a)\)

Theorems

Limit Existence Theorem
Continuity Theorem

Suitable Grade Level

Grades 11-12