求2y^2=x z=0 x/4+y/2+z/2=1所围成的体积,请问各位大侠们,这个题目用二重积分做还是三重积分做,哪个简求2y^2=x z=0 x/4+y/2+z/2=1所围成的体积,请问各位大侠们,这个题目用二重积分做还是三重积分做,
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