The Basic Principles Of de cuong giua hk 1 toan 10
T?p con c?a t?p h?p A là t?p h?p g?m các ph?n t? ??u là ph?n t? c?a t?p h?p A.
(commence array l A subset B Leftrightarrow forall x in a very Rightarrow x in BA notsubset B Leftrightarrow exists x in a very Rightarrow x notin Bstop array )
Xem th? ?? Toán 10 C&aacut