Math Problem Statement
Explain
Solution
The given limit expression is:
This is a classic limit problem, which involves the difference quotient and appears to be connected to the derivative of a function. Specifically, it resembles the definition of the derivative of at .
Step-by-Step Explanation:
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Expand : Simplifying this:
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Substitute into the original limit: The expression becomes: Simplify the numerator:
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Simplify by factoring out : Factor from the numerator: Cancel out (as long as ):
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Take the limit as : Now, substitute into the simplified expression:
Thus, the value of the limit is:
Conclusion:
The limit evaluates to , which is the derivative of at .
Do you want more details on any specific part of this solution or have any questions?
Here are 5 related questions to deepen your understanding:
- What is the definition of the derivative using limits?
- How would the approach change if the power were different, such as ?
- How is this limit problem related to the concept of instantaneous rate of change?
- How can you use the binomial expansion to help solve similar limit problems?
- What happens if the limit fails to exist for certain functions?
Tip: When dealing with limits that resemble derivative definitions, identifying the underlying function can help simplify the problem greatly.
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Math Problem Analysis
Mathematical Concepts
Limits
Derivatives
Algebra
Formulas
lim (h -> 0) ((3 + h)^3 - 27) / h
Derivative definition lim (h -> 0) (f(x + h) - f(x)) / h
Theorems
Limit definition
Derivative of a cubic function
Suitable Grade Level
Grades 11-12