What Is The Answer?

Anonymous

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What is the answer?

 

Answer No.1

ZenStudent

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The dot product is (1, 2, -1).(1, 4, -2) = (1*1)+(2*4)+((-1)*(-2)) = 1+8+2 = 11

Answer No.2

Anonymous

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(1, 2, -1) and (1, 4, -2) 1*1 +2*4 +-1*-2 = 2 + 8 + 2 = 12

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