lim X118 2x² +5x+1 4 x² - 3x²

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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The image contains a mathematical expression representing a limit. The expression is formatted as follows:

\[
\lim_{{x \to -\infty}} \frac{{2x^4 + 5x + 1}}{{x^2 - 3x^4}}
\]

This is a calculus problem where you are tasked with finding the limit of the given rational function as \(x\) approaches negative infinity. The function is a fraction where the numerator is \(2x^4 + 5x + 1\) and the denominator is \(x^2 - 3x^4\).

### Key Points to Solve the Limit:
1. **Identify the Degrees of the Polynomials:**
   - The highest degree term in the numerator is \(2x^4\).
   - The highest degree term in the denominator is \(-3x^4\).

2. **Comparing Degrees:**
   - Since the degree of the numerator and the denominator is the same (both are 4), the limit largely depends on the coefficients of these terms.

3. **Simplifying the Expression:**
   - Focus on the leading terms for simplicity:
     \[
     \lim_{{x \to -\infty}} \frac{{2x^4}}{{-3x^4}} = \frac{2}{-3} = -\frac{2}{3}
     \]

Therefore, the limit of the expression as \(x\) approaches negative infinity is \(-\frac{2}{3}\).
Transcribed Image Text:The image contains a mathematical expression representing a limit. The expression is formatted as follows: \[ \lim_{{x \to -\infty}} \frac{{2x^4 + 5x + 1}}{{x^2 - 3x^4}} \] This is a calculus problem where you are tasked with finding the limit of the given rational function as \(x\) approaches negative infinity. The function is a fraction where the numerator is \(2x^4 + 5x + 1\) and the denominator is \(x^2 - 3x^4\). ### Key Points to Solve the Limit: 1. **Identify the Degrees of the Polynomials:** - The highest degree term in the numerator is \(2x^4\). - The highest degree term in the denominator is \(-3x^4\). 2. **Comparing Degrees:** - Since the degree of the numerator and the denominator is the same (both are 4), the limit largely depends on the coefficients of these terms. 3. **Simplifying the Expression:** - Focus on the leading terms for simplicity: \[ \lim_{{x \to -\infty}} \frac{{2x^4}}{{-3x^4}} = \frac{2}{-3} = -\frac{2}{3} \] Therefore, the limit of the expression as \(x\) approaches negative infinity is \(-\frac{2}{3}\).
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