, , , , . , : , , .
, .
:
M [ C ]= C;
D [ C ]=0.
:
M [ C× ]= C×M [ ];
D [ C× ]= C2 × D [ ].
() :
M [ ]= M [ ] M [ ],
D [ ]= D [ ]+ D [ ]+ 2Kxy.
:
M [ ]= M [ ] M [ ],
D [ ]= D [ ] D [ ]+ D [ ]+ D [ ]+ Kxy.
D [ a +b ]= D [ a ]+ D [ b ]+ 2K [ a ,b ]= a2D [ ]+ b2 D [ ]+ 2abK [ , ].