Math Problem Statement

The function [g] is defined for all real numbers. Function g is graphed. The x-axis goes from negative 8 to 8. The graph consists of a curve and a closed circle. The curve starts at (negative 8, 2), moves upward to (negative 4, 4), and moves downward through an open circle at x = 2, midway between y = 1 and y = 2. The curve ends in quadrant 1. The closed circle is plotted at x = 2, between y = negative 2 and y = negative 3, closer to y = negative 2. [\small{1}] [\small{2}] [\small{3}] [\small{4}] [\small{5}] [\small{6}] [\small{7}] [\small{\llap{-}2}] [\small{\llap{-}3}] [\small{\llap{-}4}] [\small{\llap{-}5}] [\small{\llap{-}6}] [\small{\llap{-}7}] [\small{1}] [\small{2}] [\small{3}] [\small{4}] [\small{5}] [\small{6}] [\small{7}] [\small{\llap{-}2}] [\small{\llap{-}3}] [\small{\llap{-}4}] [\small{\llap{-}5}] [\small{\llap{-}6}] [\small{\llap{-}7}] [y] [x] [\blueD g] What is a reasonable estimate for

[\displaystyle\lim_{x\to 2}g(x)] ? Choose 1 answer: Choose 1 answer: (Choice A)
[-2.4] A [-2.4] (Choice B)
[-2] B [-2] (Choice C)
[1.5] C [1.5] (Choice D)
[2] D [2] (Choice E) The limit doesn't exist. E The limit doesn't exist.

Solution

The question is asking for the value of the limit limx2g(x)\lim_{x \to 2} g(x), which refers to the value that the function g(x)g(x) approaches as xx gets closer to 2 from both sides (left and right).

Key points from the description of the graph:

  • There's an open circle at x=2x = 2 between y=1y = 1 and y=2y = 2.
  • The curve approaches this open circle as xx approaches 2 from both the left and right sides.
  • A closed circle is plotted at x=2x = 2 near y=2.4y = -2.4, but this is the actual value of the function at x=2x = 2, not the limit.

The function’s value at x=2x = 2 (which is 2.4-2.4) doesn't affect the limit, because the limit is determined by the values that the function approaches from both sides of x=2x = 2.

Since the open circle (which represents the value the function approaches) is midway between y=1y = 1 and y=2y = 2, a reasonable estimate for limx2g(x)\lim_{x \to 2} g(x) is 1.51.5.

Conclusion:

The correct answer is: 1.5\boxed{1.5}

Would you like more details on how limits work, or have any other questions?

Related Questions:

  1. What is the difference between a limit and the function value?
  2. How does an open circle on a graph affect the limit?
  3. Why is the function value at x=2x = 2 irrelevant for the limit in this case?
  4. How can limits be estimated from a graph?
  5. What are left-hand and right-hand limits?

Tip:

Always check whether the limit exists from both directions. If the values from the left and right are different, the limit does not exist.

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Math Problem Analysis

Mathematical Concepts

Limits
Graph Analysis
Continuity

Formulas

-

Theorems

Limit Definition
Left-hand and Right-hand Limits

Suitable Grade Level

Grades 10-12