題組內容

Problem 2 (25%) Let F = (y2 + axz + yz)i +(x2+ bcy +xz)j +(x2 + cyz+ wy)k.

(b). (15%) For the values found in (a), ind a surface S with the following property: the path integral62f9e6e94a760.jpg F ㆍ dr is equal to O for any two points P, Q (connected by any curve C) on the surface S.