Diviser pour régner – Cours 4 : Matrices et polynômes

•×
=×
...
...
... ...
=
...
...
... ...
...
...
. . . . . .
•
=X
=
•
×
(−)

•×
 =  
•= + = +
= + = +
•
×

•×
= ( + )( + )
= ( + )( )
= ( )( −)
= ( )( −)
= ( + )( )
= ( −)( + )
= ( −)( + )
= + −+ = +
= + = −+ +
•

•×
=
=
/
/
= =
/= =
 = × 