Evaluate the expression.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (t2 - 8)i + (2t - 2)j + 4k
A. T = 
i + 
j; N = 
i + 
j
B. T = 
i + 
j; N = 
i - 
j
C. T = 
i - 
j; N = - 
i - 
j
D. T = 
i + 
j; N = 
i - 
j
Mathematics
Find x.log4 x = log4 3
A. x = 3
B. x = -3
C. x = 4
D. x = 
Mathematics
Use a calculator to find the root or power rounded to six decimal places.130.1
A. 0.129239 B. 1.300000 C. 1.292392 D. 1.116123
Mathematics
Find the range of the function.f(x) = 7 - x2
A. [7, ?)
B. (-?, 7]
C. (-?, ?)
D. [-
, 
]
Mathematics