Question

Draw a cuboids given by the point (6,5,2). Explain the meaning of quadric surface. Sketch the graph of x^2/4 + y^2/9 =1 in three dimensions.

Answer 1

cuboids given by the point (6,5,2):

Quadric surfaces are natural 3D-extensions of the so-called conics (ellipses, parabolas, and hyperbolas),

graph of $x^2/4 + y^2/9 =1$ :