Math Problem Statement

Evaluate the limit: lim (x -> 0) [ x / (e^x - 1) ]

Solution

You have provided an image showing the limit expression:

limx0xex1\lim_{{x \to 0}} \frac{x}{{e^x - 1}}

To solve this, we'll evaluate the limit as x0x \to 0.

Step-by-step solution:

  1. Substitute x=0x = 0 into the expression: 0e01=011=00\frac{0}{{e^0 - 1}} = \frac{0}{1 - 1} = \frac{0}{0} This gives an indeterminate form 00\frac{0}{0}, which means we can apply L'Hôpital's Rule.

  2. Apply L'Hôpital's Rule: L'Hôpital's Rule states that if the limit of the form 00\frac{0}{0} exists, we can differentiate the numerator and denominator and take the limit of the resulting expression.

    • Differentiate the numerator: ddx(x)=1\frac{d}{dx}(x) = 1.
    • Differentiate the denominator: ddx(ex1)=ex\frac{d}{dx}(e^x - 1) = e^x.

    The limit becomes: limx01ex=1e0=1\lim_{{x \to 0}} \frac{1}{e^x} = \frac{1}{e^0} = 1

Thus, the value of the limit is 11.


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Math Problem Analysis

Mathematical Concepts

Limits
L'Hôpital's Rule
Calculus

Formulas

L'Hôpital's Rule: If limit results in 0/0, differentiate numerator and denominator

Theorems

L'Hôpital's Rule

Suitable Grade Level

Undergraduate Calculus