№1.14. Build the surface and to determine their views as well) 5x2 - y2 - 15z2 + 15 = 0; b) x2 + 3z = 0;
№2.14. 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) y2 = -4z; Oz; b) 3y2 + z2 = 6; Oy.
№3.14. Build a body bounded by said surfaces:
a) 2z = x2 + y2; z = 0; x = 2; y = 3; x = 0; y = 0.
b) x2 + y2 = 4x; z = 0; z = x.

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