SEJAM u=(3,5,-9) E v =(4,4,-2).CALCULE u-2v.
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u-2v= (3,5,-9) - 2(4,4,-2)
= (3,5,-9) - ( 8,8,-4)
= ( -5,-3,-5)
= (3,5,-9) - ( 8,8,-4)
= ( -5,-3,-5)
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