4. Let R be the region inside the ellipsoid where a,b,c> 0, and abovethe plane z = b-y, then the volume of the region R is =______.
阿摩線上測驗
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阿摩線上測驗
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where a,b,c> 0, and abovethe plane z = b-y, then the volume of the region R is =______.