(3). Evaluate the surface integral , where S is the hemisphere{(x,y,z)|x2+y2+z2=1，z≥0},oriented upward, and (x,y,z)=(x2sinz,x,(1+z)exy).Ans. __丙__
阿摩線上測驗
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, where S is the hemisphere{(x,y,z)|x2+y2+z2=1，z≥0},oriented upward, and 
(x,y,z)=(x2sinz,x,(1+z)exy).