Find the unit tangent vector of the given curve.r(t) = (10 + 10t7)i + (3 + 11t7)j + (9 + 2t7)k
A. T = 10i + 11j + 2k
B. T = 
i + 
j + 
k
C. T = 
i + 
j + 
k
D. T = 
i + 
j + 
k
Answer: C
Mathematics
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Evaluate the integral using the given substitution.
, u = 3x + 6
A. 2
+ C
B. 
+ C
C. 
+ C
D. 
+ C
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A. $7.28 B. $8.28 C. $18.64 D. $16.64
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