5. Given the vector field F = (ycos(xy) – 2x) i + (æ cos(xy) + 2y) j %3D (a) Show that the vector field is a gradient vector field. F (b) Find the potential function for the given vector field. (c) Evaluate the integral f, Fdrwhere L is any curve connecting the points A = (T,1) and В 3 (1, 2п) (d) ( What is the value of f FdTwhere C is a closed curve.

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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Given the vector field \(\vec{F} = (y \cos(xy) - 2x) \, \vec{i} + (x \cos(xy) + 2y) \, \vec{j}\):

(a) Show that the vector field is a gradient vector field, \(\vec{F}\).

(b) Find the potential function for the given vector field.

(c) Evaluate the integral \(\int_L \vec{F} \cdot d\vec{r}\) where \(L\) is any curve connecting the points \(A = (\pi, 1)\) and \(B = (1, 2\pi)\).

(d) What is the value of \(\oint_C \vec{F} \cdot d\vec{r}\) where \(C\) is a closed curve.
Transcribed Image Text:Given the vector field \(\vec{F} = (y \cos(xy) - 2x) \, \vec{i} + (x \cos(xy) + 2y) \, \vec{j}\): (a) Show that the vector field is a gradient vector field, \(\vec{F}\). (b) Find the potential function for the given vector field. (c) Evaluate the integral \(\int_L \vec{F} \cdot d\vec{r}\) where \(L\) is any curve connecting the points \(A = (\pi, 1)\) and \(B = (1, 2\pi)\). (d) What is the value of \(\oint_C \vec{F} \cdot d\vec{r}\) where \(C\) is a closed curve.
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