Find the unit vector having the same direction as v.v = 4i + 3j
A. u = 
i + 
j
B. u = - 
i - 
j
C. u = 
i + 
j
D. u = 20i + 15j
Answer: C
Mathematics
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The system cannot be solved by matrix inverse methods. Find a method that could be used and then solve the system.-2x1 + 6x2 = 46x1 - 18x2 = 12
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