Find the derivative of the function at the given point in the direction of A.
A = 12i - 5j
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Multiply or find the special product.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Compute the unit binormal vector and torsion of the curve. r(t) = 
A. B(t) = 
, ? = 1
B. B(t) = 
, ? = 0
C. B(t) = 
, ? = 0
D. B(t) = 
, ? = 1
Mathematics
Find the exact value of the expression.cos (-390°)
A. - 
B. 
C. - 
D. 
Mathematics
Solve the problem.Which of the lines in the picture are lines of symmetry of the given figure?
A. r and t B. Only r C. q and s D. q, r, s and t
Mathematics