Math Problem Statement
Question 1 Sketch a function, f (x), that has all the given properties. The function must be continuous for all x ∈ R, except at points in which the given properties force a discontinuity. limx→−3 f (x) = 1, f (−3) = 3, limx→2+ f (x) = 1, limx→2− f (x) = −1, f (2) is undefined.
Solution
To sketch the function with the given properties, let's break down the key points:
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Limit as :
- , meaning the function approaches 1 as gets close to -3.
- However, , indicating a jump discontinuity at . The value of the function at is not equal to the limit but is 3 instead.
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Limits as :
- , meaning as approaches 2 from the right, the function approaches 1.
- , meaning as approaches 2 from the left, the function approaches -1.
- is undefined, so there is a discontinuity (probably a removable or infinite discontinuity) at .
Visualizing the sketch:
- At , the function approaches , but there's a jump to , creating a point at (−3, 3) that stands above the limit line .
- At , there is a jump discontinuity because the function approaches 1 from the right and -1 from the left. The point is undefined, leaving a gap at .
- For all other values of , the function is continuous and behaves according to these limits.
A basic sketch would look like:
- As , the curve approaches from both sides, but at , there is a dot at .
- As , the function approaches from the left and from the right, but there is no point at .
Let me know if you'd like a graph or further details!
Would you like a visual graph, or any clarifications?
Here are 5 related questions to explore:
- How do you distinguish between jump and removable discontinuities?
- What are the implications of having an undefined point in a continuous function?
- How does the behavior of one-sided limits influence the overall continuity of a function?
- How can we describe continuity in terms of limits and function values?
- What other types of discontinuities can occur in functions?
Tip: When sketching a function based on limits, focus on where the function approaches and what happens at critical points like jumps or undefined values.
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Math Problem Analysis
Mathematical Concepts
Limits
Continuity
Discontinuities
Formulas
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Theorems
Limit Theorem
Continuity and Discontinuity Theorems
Suitable Grade Level
Undergraduate Calculus (Grades 11-12, University Level)
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