t g(x) = 2x² + 6x – 4 in the interval [-1,1]. Use the Intermediate Value Theorem to determine if a ot exists for the function in the given interval. esure to justify your answer.) O Yes, a root exists. O No, a root does not exist. O Not Enough Information

Calculus: Early Transcendentals
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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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**Problem Statement:**

Let \( g(x) = 2x^3 + 6x - 4 \) in the interval \([-1, 1]\). Use the Intermediate Value Theorem to determine if a root exists for the function in the given interval.

(Be sure to justify your answer.)

- ⓐ Yes, a root exists.
- ⓑ No, a root does not exist.
- ⓒ Not Enough Information

**Explanation:**
The Intermediate Value Theorem states that if a function \( g \) is continuous on the interval \([a, b]\) and if \( g(a) \) and \( g(b) \) have opposite signs, then there exists at least one \( c \) in the interval \((a, b)\) such that \( g(c) = 0 \). 

To determine if a root exists for the function in the interval \([-1, 1]\):
1. Evaluate \( g(-1) \).
2. Evaluate \( g(1) \).
3. Check if \( g(-1) \) and \( g(1) \) have opposite signs. If they do, a root must exist within the interval \([-1, 1]\).

Perform these evaluations and use the results to choose the appropriate answer from the given choices.
Transcribed Image Text:**Problem Statement:** Let \( g(x) = 2x^3 + 6x - 4 \) in the interval \([-1, 1]\). Use the Intermediate Value Theorem to determine if a root exists for the function in the given interval. (Be sure to justify your answer.) - ⓐ Yes, a root exists. - ⓑ No, a root does not exist. - ⓒ Not Enough Information **Explanation:** The Intermediate Value Theorem states that if a function \( g \) is continuous on the interval \([a, b]\) and if \( g(a) \) and \( g(b) \) have opposite signs, then there exists at least one \( c \) in the interval \((a, b)\) such that \( g(c) = 0 \). To determine if a root exists for the function in the interval \([-1, 1]\): 1. Evaluate \( g(-1) \). 2. Evaluate \( g(1) \). 3. Check if \( g(-1) \) and \( g(1) \) have opposite signs. If they do, a root must exist within the interval \([-1, 1]\). Perform these evaluations and use the results to choose the appropriate answer from the given choices.
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