Soru
Guess the value of the limit by evaluating the function at values close to where familiar.) lim _(xarrow 0)(1+x)^1/x square
Çözüm
4.3
(41 Oylar)
Ruken
Elit · 8 yıl öğretmeni
Uzman doğrulaması
Cevap
To evaluate the limit \(\lim_{x \to 0} (1+x)^{1/x}\), we can use the fact that this expression is a well-known limit in calculus. The limit of \((1+x)^{1/x}\) as
approaches 0 is the definition of the number
, the base of the natural logarithm.To understand why this is true, consider the following steps:1. **Rewrite the Expression Using Exponential Functions:**
2. **Analyze the Argument of the Exponential Function:** We need to find the limit of \(\frac{\ln(1+x)}{x}\) as
approaches 0.3. **Use the Taylor Series Expansion:** For small values of
, \(\ln(1+x)\) can be approximated by its Taylor series:
Therefore,
4. **Take the Limit:** As
approaches 0, the terms involving
in the expansion go to 0:
5. **Combine the Results:** Since \(\frac{\ln(1+x)}{x}\) approaches 1 as
approaches 0, we have:
Therefore, the value of the limit is: