Let f: R→R where f(x)=x²+2.Which of the following is f((2,11))? O (-3,0) O (0,3) O (-3,3) (-3,3)-{0}

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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**Question 29**

Let \( f: \mathbb{R} \to \mathbb{R} \) where \( f(x) = x^2 + 2 \). Which of the following is \( f^{-1}((2,11)) \)?

- \( (-3, 0) \)
- \( (0, 3) \)
- \( (-3, 3) \)
- \( (-3, 3) - \{0\} \) (Selected)

**Explanation:**

The function \( f(x) = x^2 + 2 \) is a quadratic function. The inverse \( f^{-1} \) for the interval \((2, 11)\) is determined by finding the values of \( x \) such that the range from 2 to 11 is covered. 

For \( f(x) = x^2 + 2 \), we have:

- \( f(x) = 2 \) when \( x^2 = 0 \), so \( x = 0 \).
- \( f(x) = 11 \) when \( x^2 = 9 \), so \( x = \pm 3 \).

Thus, \( f^{-1}((2, 11)) \) corresponds to the \( x \)-values in the interval \((-3, 3)\) excluding \( x = 0\).
Transcribed Image Text:**Question 29** Let \( f: \mathbb{R} \to \mathbb{R} \) where \( f(x) = x^2 + 2 \). Which of the following is \( f^{-1}((2,11)) \)? - \( (-3, 0) \) - \( (0, 3) \) - \( (-3, 3) \) - \( (-3, 3) - \{0\} \) (Selected) **Explanation:** The function \( f(x) = x^2 + 2 \) is a quadratic function. The inverse \( f^{-1} \) for the interval \((2, 11)\) is determined by finding the values of \( x \) such that the range from 2 to 11 is covered. For \( f(x) = x^2 + 2 \), we have: - \( f(x) = 2 \) when \( x^2 = 0 \), so \( x = 0 \). - \( f(x) = 11 \) when \( x^2 = 9 \), so \( x = \pm 3 \). Thus, \( f^{-1}((2, 11)) \) corresponds to the \( x \)-values in the interval \((-3, 3)\) excluding \( x = 0\).
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Consider the given function,

fx=x2+2fx-2=x2x=±fx-2

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