mathematica积分问题!提示NIntegrate::nlim:"z = -c\ Sqrt[1-(x^2+y^2)/a^2] is not a valid limit of integration"

mathematica积分问题!提示NIntegrate::nlim:"z = -c\ Sqrt[1-(x^2+y^2)/a^2] is not a valid limit of integration"
mathematica积分问题!
提示NIntegrate::nlim:"z = -c\ Sqrt[1-(x^2+y^2)/a^2] is not a valid limit of integration"

mathematica积分问题!提示NIntegrate::nlim:"z = -c\ Sqrt[1-(x^2+y^2)/a^2] is not a valid limit of integration"
你写的顺序有问题的
∫(x上下限)∫(y上下限)∫(z上下限)被积函数dzdydx

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