August 2019 1 40 Report
Dados os vetores a = 5i + j + k, b = i + 2j + 3 k, c = i - 14 j + 9 k e v = 13 i - 31 j + 43 k, se o vetor v = xa + yb + zc, então a soma x² + y² + z² é igual a:


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