Question

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please only answer if you're 100% sure

what do the level surfaces of rx, y, z) = 9x2-9y2 + 9z2 look like? [Hint: Use cross-sections with y constant instead of cross-sections with z constant.] For f(x, y, z) > 0, the level surface is a Select- Select- . For f(x, y, z) < 0, the level surface is a For f(x, y, z)-0, the level surface is a hyperboloid of one sheet X cone hyperboloid of one sheet hyperboloid of two sheets sphere Subm paraboloid

Answer 1

The level Budfoce s a nspedboloido