2. Evaluate the double integral STR (x+ y) dA over the region R give by R= {(x, y) : y > x², y < VI}.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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**Problem 2:**

Evaluate the double integral \( \iint_{R} (x + y) \, dA \) over the region \( R \) given by \( R = \{(x, y) : y \geq x^2, y \leq \sqrt{x}\} \). 

### Explanation:

This problem involves integrating the function \( x + y \) over a specific region \( R \) in the xy-plane. The region \( R \) is defined by the set of inequalities:

- \( y \geq x^2 \): This represents the area above the parabola opening upwards.
- \( y \leq \sqrt{x} \): This represents the area below the curve resembling half of a sideways parabola.

Together, these inequalities define a bounded region \( R \) where the double integral \( \iint_{R} (x + y) \, dA \) needs to be computed. The limits of integration for \( x \) and \( y \) will be determined by the intersection points and intervals along the curves. 

### Graphical Representation:

If graphing the region, you will see:

- The curve \( y = x^2 \) begins at the origin and opens upwards.
- The curve \( y = \sqrt{x} \) starts at the origin and curves upwards more steeply.
- The region \( R \) is the area between these two curves.

The graphic can illustrate the bounds and the area over which the integration is performed.
Transcribed Image Text:**Problem 2:** Evaluate the double integral \( \iint_{R} (x + y) \, dA \) over the region \( R \) given by \( R = \{(x, y) : y \geq x^2, y \leq \sqrt{x}\} \). ### Explanation: This problem involves integrating the function \( x + y \) over a specific region \( R \) in the xy-plane. The region \( R \) is defined by the set of inequalities: - \( y \geq x^2 \): This represents the area above the parabola opening upwards. - \( y \leq \sqrt{x} \): This represents the area below the curve resembling half of a sideways parabola. Together, these inequalities define a bounded region \( R \) where the double integral \( \iint_{R} (x + y) \, dA \) needs to be computed. The limits of integration for \( x \) and \( y \) will be determined by the intersection points and intervals along the curves. ### Graphical Representation: If graphing the region, you will see: - The curve \( y = x^2 \) begins at the origin and opens upwards. - The curve \( y = \sqrt{x} \) starts at the origin and curves upwards more steeply. - The region \( R \) is the area between these two curves. The graphic can illustrate the bounds and the area over which the integration is performed.
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