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I have attached my two questions.

I have attached my two questions.

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Grade:11

1 Answers

UPINDERJEET SINGH
63 Points
9 years ago
Answer to first question:
x=|a+bw+cw2| + |a+bw2+cw|
x=|a| +x=|a| +|bw|+|cw2|+|a| +|bw2|+|cw​|
x=|a|+|b|×|w|+|c|×|w2|+|a| +|b|×|w2|+|c|×|w​|
x=|a|+|b|×1+|c|×1+|a| +|b|×1+|c|×1          (since |w|, |w2| = 1)
x=2*(|a|+|b|+|c|)
now , 
a, b, c should be integers and be different. 
So, for the sume to be min.
a=0 b=1 c=2
so min.(x) = 6

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