If vector B is added to vector A, the result is 6i + j. If B is subtracted from A, the result is -4i + 7j. What is the magnitude of A? Select one: a. 8.2 b. 5.4 c. 4.1 d. 5.8 e. 5.1
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From the given information, we have two equations: ai + bj + ci + dj = 61i + j (1) ai + bj - ci - dj = -4i + 7j (2) By adding these two equations, we get: Show more…
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