Math Problem Statement
Solution
The image contains the following limit expression:
Let's break it down and calculate each limit:
- First Limit:
We can factor as : Substituting : So, this limit evaluates to 9.
- Second Limit:
We can divide each term by : As , , so the limit is:
- Third Limit:
This is a standard limit, which is recognized as the derivative of at . Using the known result:
Now, combining all three parts:
Thus, the value of the entire expression is:
Would you like further details or explanations for any of the steps? Here are some related questions you might find helpful:
- What is the formal definition of a limit?
- How do you evaluate indeterminate forms like ?
- How can you use L'Hopital's rule to simplify limits?
- What is the derivative of , and how does it relate to the third limit?
- How does factoring help when evaluating limits involving polynomials?
Tip: When dealing with limits of polynomials, always look for opportunities to factor expressions, especially when direct substitution results in indeterminate forms.
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Math Problem Analysis
Mathematical Concepts
Limits
Factorization
Exponential Functions
Infinity Behavior
Formulas
Factorization: x^2 - a^2 = (x - a)(x + a)
Limit of exponential functions: \lim_{x \to 0} \frac{e^{kx} - 1}{x} = k
Limit of rational functions at infinity: \lim_{x \to \infty} \frac{ax^2 + bx + c}{dx^2 + ex + f}
Theorems
Limit laws
Derivatives of exponential functions
Limit at infinity behavior
Suitable Grade Level
Grades 11-12
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