e/ (cos(2²) + y²) dæ + (sin(y²) + 2aæ²) dy Evaluate

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Calc4

**Problem Statement:**

Let \( C \) be the curve that connects the points \( (1,5) \) to \( (2,7) \) to \( (6,3) \) to \( (5,1) \) and back to \( (1,5) \) using straight lines.

**Task:**

Evaluate 
\[
\int_{C} \left( \cos(x^2) + y^2 \right) dx + \left( \sin(y^2) + 2x^2 \right) dy 
\]

**Detailed Explanation:**

To solve this line integral, we'll evaluate each segment of the piecewise-linear curve separately. The integral is split into parts for each section of the curve, and we proceed by parameterizing these segments and calculating the contribution of each part to the total integral.

**Step-by-Step Guide:**

1. **Segment (1,5) to (2,7):**
   - Parametric form: \( x = 1 + t \), \( y = 5 + 2t \), for \( t \in [0, 1] \)

2. **Segment (2,7) to (6,3):**
   - Parametric form: \( x = 2 + 4t \), \( y = 7 - 4t \), for \( t \in [0, 1] \)

3. **Segment (6,3) to (5,1):**
   - Parametric form: \( x = 6 - t \), \( y = 3 - 2t \), for \( t \in [0, 1] \)

4. **Segment (5,1) to (1,5):**
   - Parametric form: \( x = 5 - 4t \), \( y = 1 + 4t \), for \( t \in [0, 1] \)

Plug these parametric equations into the integrand and evaluate each segment using the standard procedure for line integrals.

Finally, sum the results of the integrals over all segments to get the total value.

**Note:**

- Ensure to perform each integration meticulously, keeping in mind to substitute and transform appropriately.
- Carefully handle the trigonometric and polynomial terms during integration.
- Combining all calculated values from each segment will yield the total value of the line integral.
Transcribed Image Text:**Problem Statement:** Let \( C \) be the curve that connects the points \( (1,5) \) to \( (2,7) \) to \( (6,3) \) to \( (5,1) \) and back to \( (1,5) \) using straight lines. **Task:** Evaluate \[ \int_{C} \left( \cos(x^2) + y^2 \right) dx + \left( \sin(y^2) + 2x^2 \right) dy \] **Detailed Explanation:** To solve this line integral, we'll evaluate each segment of the piecewise-linear curve separately. The integral is split into parts for each section of the curve, and we proceed by parameterizing these segments and calculating the contribution of each part to the total integral. **Step-by-Step Guide:** 1. **Segment (1,5) to (2,7):** - Parametric form: \( x = 1 + t \), \( y = 5 + 2t \), for \( t \in [0, 1] \) 2. **Segment (2,7) to (6,3):** - Parametric form: \( x = 2 + 4t \), \( y = 7 - 4t \), for \( t \in [0, 1] \) 3. **Segment (6,3) to (5,1):** - Parametric form: \( x = 6 - t \), \( y = 3 - 2t \), for \( t \in [0, 1] \) 4. **Segment (5,1) to (1,5):** - Parametric form: \( x = 5 - 4t \), \( y = 1 + 4t \), for \( t \in [0, 1] \) Plug these parametric equations into the integrand and evaluate each segment using the standard procedure for line integrals. Finally, sum the results of the integrals over all segments to get the total value. **Note:** - Ensure to perform each integration meticulously, keeping in mind to substitute and transform appropriately. - Carefully handle the trigonometric and polynomial terms during integration. - Combining all calculated values from each segment will yield the total value of the line integral.
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