Math Problem Statement

Find the limit if it exists: lim (x -> 0^+) (6/x - 6/|x|).

Solution

The limit provided in the image is:

limx0+(6x6x)\lim_{{x \to 0^+}} \left( \frac{6}{x} - \frac{6}{|x|} \right)

Let's break this down:

  1. As x0+x \to 0^+, this implies we are approaching 0 from the positive side. For x>0x > 0, we know that x=x|x| = x because the absolute value of a positive number is just the number itself.

  2. Therefore, as x0+x \to 0^+, the expression becomes:

limx0+(6x6x)\lim_{{x \to 0^+}} \left( \frac{6}{x} - \frac{6}{x} \right)

  1. Simplifying this:

6x6x=0\frac{6}{x} - \frac{6}{x} = 0

Thus, the limit is:

0\boxed{0}

Feel free to ask if you'd like further details or clarification!

Here are 5 related questions to deepen your understanding:

  1. What happens if we change the limit direction to x0x \to 0^-?
  2. How does the absolute value function behave for negative values of xx?
  3. Can you evaluate similar limits involving the absolute value function?
  4. What is the general approach for solving limits involving absolute value expressions?
  5. What would happen if the terms inside the limit were more complex, like involving powers or roots?

Tip: Always remember to analyze how the absolute value function behaves based on whether xx approaches from the positive or negative side.

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Math Problem Analysis

Mathematical Concepts

Limits
Absolute Value
Calculus

Formulas

Limit Definition
Absolute Value Function

Theorems

Limit Theorems
Properties of Absolute Value

Suitable Grade Level

Grades 10-12