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  4. TVET CHNS,Eng,Maths
  5. 求解
TVET CHNS,Eng,Maths
高中
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求解

親何公尺,BM AQ. 四 12. 設=(4,3), 設 = (4, 3), = (x,y)為與,垂直的單位向量(長度為1),若x>0,則x+y=? (A)-5 (B) 0 | V₁1 = 5. £1-(8) (B) 10500 SLEV (C) 000 1 (D) 1 S- (C) 000

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