Find the volume of the solid obtained by rotating the region B about the line y = -2. A B

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 function below will be used for the following four problems. Set up the integral to find the volum
In this section, we will examine a mathematical function and specific values associated with it.

The given function is:
\[ f(x) = 4 - x^2 \]

Additionally, two other equations are provided:
\[ y = 4 \]
\[ x = 2 \]

This setup suggests that we are looking at a quadratic function, \( f(x) = 4 - x^2 \), which forms a downward-opening parabola on the Cartesian plane. 

The equation \( y = 4 \) represents a horizontal line that intersects the y-axis at \( y = 4 \). The equation \( x = 2 \) represents a vertical line that intersects the x-axis at \( x = 2 \).

Understanding these components will aid in solving problems related to the intersection points, slopes, and areas under curves.
Transcribed Image Text:In this section, we will examine a mathematical function and specific values associated with it. The given function is: \[ f(x) = 4 - x^2 \] Additionally, two other equations are provided: \[ y = 4 \] \[ x = 2 \] This setup suggests that we are looking at a quadratic function, \( f(x) = 4 - x^2 \), which forms a downward-opening parabola on the Cartesian plane. The equation \( y = 4 \) represents a horizontal line that intersects the y-axis at \( y = 4 \). The equation \( x = 2 \) represents a vertical line that intersects the x-axis at \( x = 2 \). Understanding these components will aid in solving problems related to the intersection points, slopes, and areas under curves.
### Problem Statement
Find the volume of the solid obtained by rotating the region **B** about the line \( y = -2 \).

### Graph Explanation
The graph provided depicts the regions **A** and **B** in a coordinate plane. Here is a detailed description of the features of the graph:

1. **Coordinate System:**
   - The graph is plotted on the Cartesian plane with horizontal \(x\)-axis and vertical \(y\)-axis.

2. **Regions:**
   - **Region A:** Marked in orange.
   - **Region B:** Marked in blue.

3. **Curve/Boundary:**
   - A curved boundary separates regions **A** and **B**.

4. **Axis Positions:**
   - The boundaries for region B in the first quadrant indicate positive values for \(x\) and \(y\).

### Solution Outline
1. **Rotation Axis:**
   - Identify the line of rotation: \(y = -2\).
   
2. **Volume Calculation:**
   - Use the method of disks/washers or cylindrical shells to set up the integral expression for finding the volume of the solid of revolution.

3. **Integral Setup:**
   - Set up appropriate integrals for determining the volume.

This problem involves applying concepts from integral calculus to find the volume by using the definite integral method.
Transcribed Image Text:### Problem Statement Find the volume of the solid obtained by rotating the region **B** about the line \( y = -2 \). ### Graph Explanation The graph provided depicts the regions **A** and **B** in a coordinate plane. Here is a detailed description of the features of the graph: 1. **Coordinate System:** - The graph is plotted on the Cartesian plane with horizontal \(x\)-axis and vertical \(y\)-axis. 2. **Regions:** - **Region A:** Marked in orange. - **Region B:** Marked in blue. 3. **Curve/Boundary:** - A curved boundary separates regions **A** and **B**. 4. **Axis Positions:** - The boundaries for region B in the first quadrant indicate positive values for \(x\) and \(y\). ### Solution Outline 1. **Rotation Axis:** - Identify the line of rotation: \(y = -2\). 2. **Volume Calculation:** - Use the method of disks/washers or cylindrical shells to set up the integral expression for finding the volume of the solid of revolution. 3. **Integral Setup:** - Set up appropriate integrals for determining the volume. This problem involves applying concepts from integral calculus to find the volume by using the definite integral method.
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