Express the vector x as a linear combination of the u's.u1 = 
, u2 = 
, u3 = 
, x = 
A. x = 4u1 + 6u2 - 4u3
B. x = -8u1 + 6u2 + 8u3
C. x = -4u1 + 3u2 + 4u3
D. x = 4u1 - 3u2 - 4u3
Answer: C
Mathematics
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A. 
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