Find the unit tangent vector of the given curve.r(t) = 12t4i - 4t4j + 3t4k
A. T = 
i + 
j + 
k
B. T = 
i - 
j + 
k
C. T = 
i - 
j - 
k
D. T = 
i - 
j + 
k
Answer: D
Mathematics
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