Math Problem Statement
Solution
The given function is:
We need to determine the values of for which the function is not continuous. To do so, let's analyze the behavior of the function, particularly where the denominator equals zero, as this would cause the function to be undefined.
Step 1: Analyze the denominator
The denominator is:
This equals zero when or . These values are points where the function might be undefined, but we need to examine further.
Step 2: Simplify the function
Notice that there is a common factor of in both the numerator and the denominator:
We can cancel one term:
Now, the function is simplified, but we must still consider the domain restrictions from the original form.
-
At : Even though we canceled a factor, the function was originally undefined at . Therefore, there is a removable discontinuity at .
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At : The denominator becomes zero at , and the function is undefined. This is a vertical asymptote, so the function has a discontinuity here.
Step 3: Check
From the numerator, when , but this does not cause the function to be undefined, so it does not affect continuity.
Conclusion
The function is not continuous at:
- (removable discontinuity)
- (vertical asymptote)
Thus, the correct answer is D) -1 and 2 only.
Would you like further clarification on any part of this solution? Here are some related questions to consider:
- What is the difference between a removable discontinuity and a vertical asymptote?
- How do you identify discontinuities in rational functions?
- Can a function be continuous at a point where the denominator equals zero?
- What happens to a function at a removable discontinuity?
- How can we determine if a discontinuity affects the graph of a function?
Tip: Always check the domain of a function before simplifying, as simplifying can sometimes hide important restrictions!
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Math Problem Analysis
Mathematical Concepts
Rational Functions
Discontinuities
Simplification
Formulas
f(x) = ((x - 2)^2(x + 3)) / ((x - 2)(x + 1))
Removable and non-removable discontinuities
Theorems
Discontinuity in Rational Functions
Removable Discontinuity Theorem
Vertical Asymptotes
Suitable Grade Level
Grades 10-12
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