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 , which refers to the value that the function approaches as gets closer to 2 from both sides (left and right).
Key points from the description of the graph:
- There's an open circle at between and .
- The curve approaches this open circle as approaches 2 from both the left and right sides.
- A closed circle is plotted at near , but this is the actual value of the function at , not the limit.
The function’s value at (which is ) doesn't affect the limit, because the limit is determined by the values that the function approaches from both sides of .
Since the open circle (which represents the value the function approaches) is midway between and , a reasonable estimate for is .
Conclusion:
The correct answer is:
Would you like more details on how limits work, or have any other questions?
Related Questions:
- What is the difference between a limit and the function value?
- How does an open circle on a graph affect the limit?
- Why is the function value at irrelevant for the limit in this case?
- How can limits be estimated from a graph?
- 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
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