Find the volumes of the solids obtained by rotating the region bounded by the curves y=√√x and y=x² about the following lines. Draw the graph in each case. All answers must be in simplified form. a.) The x-axis. Work needs to be justified! (32 b.) The y-axis. Work needs to be justified. C c.) y 2. (Set up but do not evaluate). Gri
Find the volumes of the solids obtained by rotating the region bounded by the curves y=√√x and y=x² about the following lines. Draw the graph in each case. All answers must be in simplified form. a.) The x-axis. Work needs to be justified! (32 b.) The y-axis. Work needs to be justified. C c.) y 2. (Set up but do not evaluate). Gri
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Transcribed Image Text:### Volume of Solids of Revolution - Calculus Problem
#### Problem Statement:
Find the volumes of the solids obtained by rotating the region bounded by the curves \( y = \frac{4}{\sqrt{x}} \) and \( y = x^2 \) about the following lines. Draw the graph in each case. **All answers must be in simplified form.**
#### Subproblems:
a.) The x-axis. **Work needs to be justified.**
b.) The y-axis. **Work needs to be justified.**
c.) \( y = 2 \). **Set up but do not evaluate.**
#### Explanation:
1. **Rotating about the x-axis:**
- Find the points of intersection of the curves \( y = \frac{4}{\sqrt{x}} \) and \( y = x^2 \).
- Use the disk method or washer method to set up the integral that represents the volume.
- Integrate and simplify the result.
2. **Rotating about the y-axis:**
- Find the points of intersection of the curves.
- Use the shell method to set up the integral that represents the volume.
- Integrate and simplify the result.
3. **Rotating about the line \( y = 2 \):**
- Find the points of intersection of the curves.
- Use the washer method, adjusting the radii to account for the offset of the line \( y = 2 \).
- Set up the integral without performing the evaluation.
#### Visualization:
- **Graphs:**
- Draw the graphs of both equations \( y = \frac{4}{\sqrt{x}} \) and \( y = x^2 \) to identify the region bounded by them.
- Clearly mark the axes and the lines of rotation (x-axis, y-axis, and \( y = 2 \)) on the graphs.
- Shade the region that will be revolved to form the solid.
This structured approach breaks down the problem into manageable steps and uses visualization to aid understanding, providing a clear path to solving these types of calculus problems.
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