Let F(r, y) = (2re-")i+ (2y – x²e=v)j. (a) Show there exists a function f(r, y) such that Vf = F. (b) Find f(x, y) such that Vf = F. (c) Calculate 2.re "dx + (2y – ²e")dy where C is the unit octagon centered at the origin, oriented clockwise.
Let F(r, y) = (2re-")i+ (2y – x²e=v)j. (a) Show there exists a function f(r, y) such that Vf = F. (b) Find f(x, y) such that Vf = F. (c) Calculate 2.re "dx + (2y – ²e")dy where C is the unit octagon centered at the origin, oriented clockwise.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![The problem involves a vector field and requires demonstrating the existence of a potential function, finding this potential function, and evaluating a line integral over a specific path.
2. Let \(\mathbf{F}(x, y) = (2xe^{-y})\mathbf{i} + (2y - x^2 e^{-y})\mathbf{j}\).
Tasks:
(a) **Existence of a Potential Function**: Demonstrate that there exists a function \(f(x, y)\) such that the gradient \(\nabla f = \mathbf{F}\).
(b) **Finding the Potential Function**: Determine the function \(f(x, y)\) such that \(\nabla f = \mathbf{F}\).
(c) **Evaluate the Line Integral**:
\[
\oint_C 2xe^{-y}dx + (2y - x^2 e^{-y})dy
\]
where \(C\) represents the unit octagon centered at the origin, with a clockwise orientation.
Note: This task involves understanding vector calculus concepts like potential functions and line integrals, and applying them in the context of the given vector field.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F77cac1a6-5ad9-4f72-bdd9-21a202e53df4%2Ff3fc0b02-d7d9-46bc-9fae-a70a62642fcf%2F63n96pa_processed.png&w=3840&q=75)
Transcribed Image Text:The problem involves a vector field and requires demonstrating the existence of a potential function, finding this potential function, and evaluating a line integral over a specific path.
2. Let \(\mathbf{F}(x, y) = (2xe^{-y})\mathbf{i} + (2y - x^2 e^{-y})\mathbf{j}\).
Tasks:
(a) **Existence of a Potential Function**: Demonstrate that there exists a function \(f(x, y)\) such that the gradient \(\nabla f = \mathbf{F}\).
(b) **Finding the Potential Function**: Determine the function \(f(x, y)\) such that \(\nabla f = \mathbf{F}\).
(c) **Evaluate the Line Integral**:
\[
\oint_C 2xe^{-y}dx + (2y - x^2 e^{-y})dy
\]
where \(C\) represents the unit octagon centered at the origin, with a clockwise orientation.
Note: This task involves understanding vector calculus concepts like potential functions and line integrals, and applying them in the context of the given vector field.
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