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

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Discussion Overview

The discussion revolves around evaluating the limit of the function f(x) = (1 + 0.01x)^(10/x) as x approaches 0. Participants explore various methods and approaches to solve this limit question, drawing from calculus concepts.

Discussion Character

  • Homework-related, Mathematical reasoning, Exploratory

Main Points Raised

  • One participant expresses uncertainty about how to approach the limit problem, suggesting that the power (10/x) may need special consideration.
  • Another participant proposes applying the limit formula lim_{x→0}(1+x)^(1/x) = e as a potential method for solving the limit.
  • A different participant reformulates the limit using a substitution t = 1/(10x), indicating that as x approaches 0, t approaches infinity, and suggests that the limit may involve e.
  • One participant suggests that if the expression were (0.1x) instead of (0.01x), the limit would yield e^(1/10).
  • Another participant proposes using the Binomial Expansion to rewrite the expression and simplify it as x approaches 0.

Areas of Agreement / Disagreement

Participants present multiple approaches and methods for evaluating the limit, indicating that there is no consensus on a single solution or method at this time.

Contextual Notes

Some participants reference specific limit properties and expansions, but the discussion does not resolve the mathematical steps or assumptions required for a complete solution.

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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Apply the formula
[tex]\lim_{x\rightarrow 0}(1+x)^{\frac{1}{x}}=e[/tex]
 
[tex] \lim_{x\rightarrow 0} f(x) = \left(1 + 0.1x\right)^{\frac{10}{x}} = \left[\begin{array}{cc}<br /> t = \frac{1}{10x} \\ x = <br /> x \rightarrow 0 \Leftrightarrow t \rightarrow \infty<br /> \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
 
it would be [tex]e^{\frac{1}{10}}[/tex]
 
How about using the Binomial Exapnsion to re-write the expression and then looking at whether you can simplify it when x--> 0?
 

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