DHS - 4.2
№1.18. Build the surface and to determine their views as well) 4x2 - 6y2 + 3z2 = 0; b) 4x2 - y2 - 3z2 = 12.
№2.18. Write the equation and determine the type of the surface obtained by the rotation of the line around the specified axes, make a drawing: a) x2 = - 5y; Oy; b) 2x2 + 3z = 6; Ox.
№3.18. Build a body bounded by said surfaces:
a) y = 4x; y = 0; x = 1; z = xy; z = 0.
b) 4 · (x2 + y2) = z2; x2 + y2 = 4; y ≥ 0; z ≥ 0.

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