CHO BỐN ĐIỂM A B C D , , , PHÂN BIỆT. KHI ĐÓ VECTƠ U     ...

BAI TAP TRAC NGHIEM HINH HOC 10 CHUONG 1

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Câu 27. Cho bốn điểm A B C D , , , phân biệt. Khi đó vectơ ^u ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^{AD CD CB} ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^DB là:

u AD . C. ^u ^ ^ ^CD ^ . D. ^u ^ ^ ^ ^AC .

A. ^u ^ ^ ⁰ ^ . B. ^  ^ 