Field and Wave Electromagnetics 2nd Edition by David Cheng

Exercise 59

Assume the vector function A = a x 3 x 2 y 3 - a y x 3 y 2
a) Find
around the triangular contour shown in Fig.
b) Evaluate ( × A )• ds over the triangular area.
c) Can A be expressed as the gradient of a scalar Explain.
Figure: Graph