CHO BA ĐIỂM PHÂN BIỆT A, B, C . ĐẲNG THỨC NÀO ĐÚNG

câu 18: - DE KIEM TRA 1 TIET VECTO

Lớp 10 Toán DE KIEM TRA 1 TIET VECTO

Nội dung
Đáp án tham khảo

Câu 18: Cho ba điểm phân biệt A, B, C . Đẳng thức nào đúng?



+

^CA



=

^CB

D.

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^{AB AC}

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^BC

A.

^{CA BA BC}

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

B.

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^{AB BC CA}

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

C.

^AB

