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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**Precalculus 1.5 HW4**

1. **Find (a) \( (f + g)(x) \), (b) \( (f - g)(x) \), (c) \( (f \cdot g)(x) \), (d) \( \left(\frac{f}{g}\right)(x) \). What is the domain of (d)?**

   1. \( f(x) = 3x - 6, \quad g(x) = 3 - x \)
   
   2. \( f(x) = \frac{x}{x-2}, \quad g(x) = x^3 + 1 \)

2. **Evaluate the indicated function for \( f(x) = x^2 - 2 \) and \( g(x) = x - 1 \) algebraically.**

   3. \( (f - g)(2) \)
   
   4. \( \left(\frac{f}{g}\right)(t - 2) \)

3. **Find (a) \( (f \circ g)(x) \) and (b) \( (g \circ f)(x) \)**

   5. \( f(x) = x^4 - 4, \quad g(x) = \sqrt[4]{x + 4} \)
   
   6. \( f(x) = x^2 + 9, \quad g(x) = \sqrt{x} \)

4. **Use the graphs of \( f \) and \( g \) to evaluate the functions:**

   7. (a) \( (f \circ g)(1) \)
   
      (b) \( (f \cdot g)(4) \)

   8. (a) \( (f \circ g)(1) \)
   
      (b) \( (g \circ f)(3) \)

**Graphs Explanation:**

- **Graph of \( f(x) \):** The graph shows a V-shaped plot that opens upwards. The points plotted are at (-1,2), (1,0), (3,0), and (5,2). The graph is symmetric about \( x = 3 \).

- **Graph of \( g(x) \):** The graph is a straight line with a negative slope. The points plotted include (0
Transcribed Image Text:**Precalculus 1.5 HW4** 1. **Find (a) \( (f + g)(x) \), (b) \( (f - g)(x) \), (c) \( (f \cdot g)(x) \), (d) \( \left(\frac{f}{g}\right)(x) \). What is the domain of (d)?** 1. \( f(x) = 3x - 6, \quad g(x) = 3 - x \) 2. \( f(x) = \frac{x}{x-2}, \quad g(x) = x^3 + 1 \) 2. **Evaluate the indicated function for \( f(x) = x^2 - 2 \) and \( g(x) = x - 1 \) algebraically.** 3. \( (f - g)(2) \) 4. \( \left(\frac{f}{g}\right)(t - 2) \) 3. **Find (a) \( (f \circ g)(x) \) and (b) \( (g \circ f)(x) \)** 5. \( f(x) = x^4 - 4, \quad g(x) = \sqrt[4]{x + 4} \) 6. \( f(x) = x^2 + 9, \quad g(x) = \sqrt{x} \) 4. **Use the graphs of \( f \) and \( g \) to evaluate the functions:** 7. (a) \( (f \circ g)(1) \) (b) \( (f \cdot g)(4) \) 8. (a) \( (f \circ g)(1) \) (b) \( (g \circ f)(3) \) **Graphs Explanation:** - **Graph of \( f(x) \):** The graph shows a V-shaped plot that opens upwards. The points plotted are at (-1,2), (1,0), (3,0), and (5,2). The graph is symmetric about \( x = 3 \). - **Graph of \( g(x) \):** The graph is a straight line with a negative slope. The points plotted include (0
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