Math Problem Statement
please give a full explanation: \lim _{x\to 0+}\left(e^{\frac{lnxe}{x}}\right)
Solution
To evaluate the limit , let's follow these steps:
Step 1: Simplify the Expression Inside the Exponential
First, consider the expression inside the exponential function:
Notice that can be expanded using the logarithm properties:
Since , we have:
Thus, the expression inside the limit becomes:
So the limit can be rewritten as:
Step 2: Analyze the Limit of the Exponent
Next, let's analyze the limit of the exponent as :
To understand this limit, break it into two parts:
Part 1:
As , approaches , and involves a term divided by a small positive . This term tends to :
Part 2:
As , grows without bound, meaning it tends to :
Step 3: Combine the Results of Both Limits
Now, let's combine the two parts:
This expression is an indeterminate form. However, considering that the term dominates (since grows much more slowly compared to as ), the sum tends to .
Step 4: Evaluate the Original Limit
Now that we know the exponent tends to as , we substitute this into the original limit:
Since grows without bound, the limit is:
Conclusion
Thus, the limit evaluates to as approaches .
Would you like to delve deeper into any part of this explanation? Here are some related questions to consider:
- How do you evaluate ?
- What are the different types of indeterminate forms in limits?
- How can L'Hôpital's Rule be applied to the limit ?
- What happens if you change the limit to ?
- How do logarithms behave near 0 and near infinity?
- What is the limit ?
- How does the behavior of the function change if the base of the exponential is different?
- Can you analyze ?
Tip: When dealing with limits, especially involving logarithms and exponential functions, always consider if the expression is an indeterminate form before proceeding to simplify or apply limit laws.
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Math Problem Analysis
Mathematical Concepts
Limits
Exponential Functions
Logarithmic Functions
Indeterminate Forms
Formulas
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Theorems
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Suitable Grade Level
Advanced High School
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