Question 87
Multiple Choice
Find the unit tangent vector to the curve r (t) = {e2tcost,e2tsint,e2t} at the point where t = 2π .
A) (32,−32,31)
B) (32,−31,32)
C) (−31,32,32)
D) (32,32,−31)
E) (143,142,−141)
F) (−142,141,143)
G) (141,−143,142)
H) (61,62,61)
Correct Answer:

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