Math Problem Statement

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What is a reasonable estimate for lim (x → 8+) g(x)?

Solution

To find the limit of g(x)g(x) as xx approaches 8 from the right (denoted limx8+g(x)\lim_{x \to 8^+} g(x)), we need to analyze the behavior of the function values as xx gets closer to 8 from values greater than 8.

The given table shows the following values:

  • For x=8.025x = 8.025, g(x)=5.2g(x) = -5.2
  • For x=8.005x = 8.005, g(x)=5.04g(x) = -5.04
  • For x=8.001x = 8.001, g(x)=5.008g(x) = -5.008
  • For x=8x = 8, g(x)=8g(x) = 8
  • For x=7.999x = 7.999, g(x)=0.008g(x) = 0.008
  • For x=7.995x = 7.995, g(x)=0.04g(x) = 0.04
  • For x=7.975x = 7.975, g(x)=0.2g(x) = 0.2

From this data, we observe that as xx approaches 8 from the right, the values of g(x)g(x) move toward 0. Therefore, the reasonable estimate for limx8+g(x)\lim_{x \to 8^+} g(x) is 0.

Thus, the correct answer is: B) 0

Would you like more details or have any questions? Here are some related questions:

  1. What does the notation limx8+g(x)\lim_{x \to 8^+} g(x) mean in terms of a one-sided limit?
  2. How would you approach finding limits for other functions from tables of values?
  3. What is the difference between limx8+g(x)\lim_{x \to 8^+} g(x) and limx8g(x)\lim_{x \to 8^-} g(x)?
  4. How can you estimate limits when the table gives values for g(x)g(x) as xx approaches a value from both directions?
  5. What does it mean for a limit to "not exist"?

Tip: When estimating limits from a table, focus on the values of g(x)g(x) as xx approaches the limit point from both sides. If the function values converge to the same value, that is the limit.

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Math Problem Analysis

Mathematical Concepts

Limits
One-sided Limits
Behavior of Functions

Formulas

lim (x → c) f(x) = L

Theorems

Limit Convergence

Suitable Grade Level

Grades 11-12