Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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My question is , why does this equal 0? I thought the limit was infinity here. ? Because (e^1/10/2)^n I thought was infinity?
![**Section 10.2: Limits and Exponentials**
**Problem 10.2.35:**
Find the limit:
\[
\lim_{{n \to \infty}} \tan^{-1} n = \frac{\pi}{2}
\]
**Problem 10.2.36:**
Consider the expression:
\[ e^{1/10} = \sqrt[10]{e} \approx 1.1. \]
Let \( r = \frac{e^{1/10}}{2} \) and note that \( 0 < r < 1 \).
Therefore,
\[
\lim_{{n \to \infty}} \frac{e^{n/10}}{2^n} = \lim_{{n \to \infty}} r^n = 0.
\]
This demonstrates how exponential limits can converge to zero when the base of the exponential is less than 1.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F61b75115-d70f-4fe2-af93-2076876ad69a%2F459f79cf-542e-4534-89c2-cf893de100de%2Fvunz1ik_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Section 10.2: Limits and Exponentials**
**Problem 10.2.35:**
Find the limit:
\[
\lim_{{n \to \infty}} \tan^{-1} n = \frac{\pi}{2}
\]
**Problem 10.2.36:**
Consider the expression:
\[ e^{1/10} = \sqrt[10]{e} \approx 1.1. \]
Let \( r = \frac{e^{1/10}}{2} \) and note that \( 0 < r < 1 \).
Therefore,
\[
\lim_{{n \to \infty}} \frac{e^{n/10}}{2^n} = \lim_{{n \to \infty}} r^n = 0.
\]
This demonstrates how exponential limits can converge to zero when the base of the exponential is less than 1.
![Certainly! Here is the transcription and explanation suitable for an educational website:
---
**Question 36:**
Evaluate the expression:
\[
\left\{ \frac{e^{n/10}}{2^n} \right\}
\]
**Explanation:**
This problem involves an exponential function where \( e^{n/10} \) is divided by \( 2^n \). The curly braces suggest that you may need to find the fractional part of the expression for different values of \( n \).
**Steps to Consider:**
1. **Understand the Function:**
- **Numerator:** \( e^{n/10} \) – An exponential function where \( n \) is divided by 10.
- **Denominator:** \( 2^n \) – An exponential function with base 2 raised to the power \( n \).
2. **Evaluate for sample values of \( n \):**
- Substitute specific values for \( n \) to determine the behavior of the function.
- Calculate the result and extract the fractional part.
3. **Graphical Representation (if required):**
- A graph of \( \frac{e^{n/10}}{2^n} \) versus \( n \) may illustrate the convergence behavior or how the fractional part changes.
Use this as a guideline to explore the function further and recognize patterns that emerge with different \( n \) values.
---](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F61b75115-d70f-4fe2-af93-2076876ad69a%2F459f79cf-542e-4534-89c2-cf893de100de%2Fv4jvgw_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Certainly! Here is the transcription and explanation suitable for an educational website:
---
**Question 36:**
Evaluate the expression:
\[
\left\{ \frac{e^{n/10}}{2^n} \right\}
\]
**Explanation:**
This problem involves an exponential function where \( e^{n/10} \) is divided by \( 2^n \). The curly braces suggest that you may need to find the fractional part of the expression for different values of \( n \).
**Steps to Consider:**
1. **Understand the Function:**
- **Numerator:** \( e^{n/10} \) – An exponential function where \( n \) is divided by 10.
- **Denominator:** \( 2^n \) – An exponential function with base 2 raised to the power \( n \).
2. **Evaluate for sample values of \( n \):**
- Substitute specific values for \( n \) to determine the behavior of the function.
- Calculate the result and extract the fractional part.
3. **Graphical Representation (if required):**
- A graph of \( \frac{e^{n/10}}{2^n} \) versus \( n \) may illustrate the convergence behavior or how the fractional part changes.
Use this as a guideline to explore the function further and recognize patterns that emerge with different \( n \) values.
---
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