The region is D:0,x+y"

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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The text describes the mathematical setup for analyzing a region and performing an integration using polar coordinates.

**Text:**
The region is \( D: y \geq 0, \, x^2 + y^2 \leq a \)

Choose the sketch of the region:

The image contains four sketches labeled A, B, C, and D. Let's describe each:

- **Sketch A:** The shaded region is the upper semicircle from \(-\sqrt{a}\) to \(\sqrt{a}\) along the x-axis.
  
- **Sketch B:** The shaded region is a right semicircle from \(0\) to \(a\) along the x-axis.
  
- **Sketch C:** The shaded region is the left semicircle from \(-\sqrt{a}\) to \(0\) along the y-axis.

- **Sketch D:** The shaded region is a top semicircle from \(0\) to \(a\) along the y-axis.

The problem specifies assuming \(a = 1\) and asks for the integration of: \(f(x, y) = 2y(x^2 + y^2)^3\) over region \(D\) using polar coordinates.

The integral expression given is:

\[
\iint_D 2y(x^2 + y^2)^3 \, dA = \, ?
\]

The task involves setting up the integral appropriately in polar coordinates.
Transcribed Image Text:The text describes the mathematical setup for analyzing a region and performing an integration using polar coordinates. **Text:** The region is \( D: y \geq 0, \, x^2 + y^2 \leq a \) Choose the sketch of the region: The image contains four sketches labeled A, B, C, and D. Let's describe each: - **Sketch A:** The shaded region is the upper semicircle from \(-\sqrt{a}\) to \(\sqrt{a}\) along the x-axis. - **Sketch B:** The shaded region is a right semicircle from \(0\) to \(a\) along the x-axis. - **Sketch C:** The shaded region is the left semicircle from \(-\sqrt{a}\) to \(0\) along the y-axis. - **Sketch D:** The shaded region is a top semicircle from \(0\) to \(a\) along the y-axis. The problem specifies assuming \(a = 1\) and asks for the integration of: \(f(x, y) = 2y(x^2 + y^2)^3\) over region \(D\) using polar coordinates. The integral expression given is: \[ \iint_D 2y(x^2 + y^2)^3 \, dA = \, ? \] The task involves setting up the integral appropriately in polar coordinates.
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