Math Problem Statement

Indicate whether the following statement is true or false. The function f(x) = |x| is continuous at every real number.

Solution

The statement is True. The function f(x)=xf(x) = |x| is indeed continuous at every real number. Absolute value functions do not have any breaks, jumps, or points of discontinuity. This continuity holds across all real numbers, including at x=0x = 0, where there is a sharp corner but no discontinuity.

Would you like a detailed explanation on continuity or the concept of absolute value functions?

Here are some related questions to deepen your understanding:

  1. What does it mean for a function to be continuous at a point?
  2. How can you prove the continuity of a piecewise function?
  3. Are all absolute value functions continuous?
  4. What types of functions have points of discontinuity?
  5. How does continuity differ from differentiability at sharp points, such as x=0x = 0 for f(x)=xf(x) = |x|?

Tip: A function is continuous if you can draw it without lifting your pencil, meaning it has no gaps, jumps, or breaks in its domain.

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Math Problem Analysis

Mathematical Concepts

Continuity
Absolute Value Functions

Formulas

f(x) = |x|

Theorems

Continuity of Absolute Value Functions

Suitable Grade Level

Grades 11-12