Suppose that a=2i + J,. B = i - 4j + k ,C= j + k,. What is the magnitude of the vector 2a - b + c. ?

Suppose that a=2i + J,. B = i - 4j + k ,C= j + k,. What is the magnitu

1.	Suppose that a=2i + J,. B = i - 4j + k ,C= j + k,. What is the magnitude of the vector 2a - b + c. ?
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