The following embarks from the system state space; the condition feedback control and quadrics optimum controls are studied.
随后又从系统的状态空间出发，研究了状态反馈控制和二次型最优控制；
2
It is known that the projection of the intersection of quadrics with common plane of symmetry on this plane is a curve of second order.
具有公共对称平面的二次曲面的交线在该平面上的投影为二次曲线。
3
In this thesis, we will investigate subdivision method and its application, including construction of four-point wavelets, generation of sharp features and quadrics.