Solve Limit Question: f(x)=(1+.01x)^(10/x)

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In summary, the conversation revolves around a limit question involving the function f(x)=(1+.01x)^(10/x) as x approaches 0. The formula \lim_{x\rightarrow 0}(1+x)^{\frac{1}{x}}=e is suggested to be applied, along with using the Binomial Expansion to rewrite the expression and simplify it when x approaches 0. The final result leads to the limit being e^{\frac{1}{10}} when x approaches 0.
  • #1
ffrpg
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Here's a question from calc I (I'm currently in calc III). My cousin needs help with this problem and I'm truly clueless as of how to solve it. It's a limit question. The questions reads, As X approaches 0 what is the limit of f(x)=(1+.01x)^(10/x). I'm guessing something needs to be done with the power (10/x) but I'm not sure quite sure what.
 
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  • #2
Apply the formula
[tex]\lim_{x\rightarrow 0}(1+x)^{\frac{1}{x}}=e[/tex]
 
  • #3
[tex]
\lim_{x\rightarrow 0} f(x) = \left(1 + 0.1x\right)^{\frac{10}{x}} = \left[\begin{array}{cc}
t = \frac{1}{10x} \\ x =
x \rightarrow 0 \Leftrightarrow t \rightarrow \infty
\end{array}\right] = [/tex][tex]\lim_{t \rightarrow \infty}f(t) = \left(1 + \frac{0.1}{t}\right)^{t} = \ldots
[/tex]

Something with [tex]e[/tex]. If it would have been [tex]0.1x[/tex] instead of [tex]0.01x[/tex]...

Nille
 
  • #4
it would be [tex]e^{\frac{1}{10}}[/tex]
 
  • #5
How about using the Binomial Exapnsion to re-write the expression and then looking at whether you can simplify it when x--> 0?
 

FAQ: Solve Limit Question: f(x)=(1+.01x)^(10/x)

What is a limit question in mathematics?

A limit question in mathematics is a type of problem that involves finding the value that a function approaches as the input approaches a certain value. It is used to determine the behavior of a function at a particular point or as the input approaches infinity or negative infinity.

What is the function f(x)=(1+.01x)^(10/x) used for?

The function f(x)=(1+.01x)^(10/x) is commonly used in mathematical modeling and financial analysis. It can be used to model exponential growth or decay, and can also be used to calculate compound interest.

How do you solve a limit question?

To solve a limit question, you can use algebraic manipulation, graphing, or numerical methods such as using a calculator or computer software. The first step is to determine if the function is continuous at the given point. If it is, you can plug in the value and evaluate the function. If it is not, you can try to simplify the function or use other methods to determine the limit.

What is the limit of f(x)=(1+.01x)^(10/x) as x approaches infinity?

The limit of f(x)=(1+.01x)^(10/x) as x approaches infinity is equal to 1. This can be determined by using the properties of exponential functions and recognizing that as x approaches infinity, the term (10/x) approaches 0, resulting in (1+.01x)^0, which is equal to 1.

How can the limit of f(x)=(1+.01x)^(10/x) be used in real-world applications?

The limit of f(x)=(1+.01x)^(10/x) can be used in real-world applications such as calculating compound interest, predicting population growth, and analyzing the behavior of a system over time. It can also be used in financial analysis to determine the return on investment for a continuously compounding interest rate.

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