5.3 实数与向量的积
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Transcript of 5.3 实数与向量的积
OOABABC
OAB,,
, OABCQPRS====
, ,.()=
, ,.=
, , ,.=
132
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1 2 3-12a5b-a+5b-2c
DB
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B 1.OABCD A. B. C. D.ABCDO
2.ABC, ,O( ).A. B. C. D. CABODE: OADB,ODABE,,
AE=EB,CE.B
,: (1) ,. (2). (3),().
P 109 ~110 5.3 1~5
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