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Solve the Problem v=3i5jv = 3 i - 5 j And w=7i+4jw = - 7 i + 4 j

Question 120

Multiple Choice

Solve the problem.
-If v=3i5jv = 3 i - 5 j and w=7i+4jw = - 7 i + 4 j , find 3v4w3 v - 4 w .


A) 4ij- 4 \mathbf { i } - \mathbf { j }
B) 19i+j- 19 i + j
C) 17i10j17 \mathbf { i } - 10 \mathbf { j }
D) 37i31j37 \mathbf { i } - 31 \mathbf { j }

Correct Answer:

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