Math Problem Statement

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lim(x -> 5) |f(x)|

Solution

The graph of f(x)=x5|f(x)| = |x - 5| shows an absolute value function, which creates a "V" shape. As xx approaches 5, the value of f(x)|f(x)| approaches zero, because 55=0|5 - 5| = 0. This illustrates the limit limx5f(x)=0\lim_{x \to 5} |f(x)| = 0.

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Here are five related questions for practice:

  1. What is the limit of f(x)|f(x)| as x5x \to 5 from the left and right?
  2. How would the graph change if the function was x3|x - 3| instead?
  3. What is the derivative of x5|x - 5| for x5x \neq 5?
  4. Can you explain why the function is continuous at x=5x = 5?
  5. How does the absolute value affect the slope on either side of x=5x = 5?

Tip: For absolute value functions, the slope changes at the point where the expression inside the absolute value equals zero!

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Math Problem Analysis

Mathematical Concepts

Limits
Absolute Value Functions

Formulas

lim(x -> 5) |f(x)|
|f(x)| = |x - 5|

Theorems

Limit Theorem
Continuity Theorem

Suitable Grade Level

Grades 11-12