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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (cosh t)i + (sinh t)j + tk
A. T = 
(tanh t)i + 
j + 
(sech t)k; N = (sech t)i - (tanh t)k
B. T = - 
(tanh t sech t)i + 
j + 
(sech t)k; N = (-sech t)i - (tanh t)k
C. T = 
(tanh t sech t)i + 
j + 
(sech t)k; N = (sech2 t)i - (sinh t)k
D. T = - 
(tanh t)i + 
j + 
(sech t)k; N = (-sech t)i - (sinh t)k
Provide an appropriate response.Find the range of the following: 23, 46, 73, 47, 92, 36, 74, 12, 97, 64, 38
A. 97 B. 15 C. 85 D. 12
Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.2.6x- 0.7y+ 5.3z- 3.4w= 12.9 6.5y+ 0.7w= -1.8 4.0z- 2.2w= 1.54.9x+ 0.6w= 3.2
A. (2.2, 1.1, 7.2, 12.4) B. (-2.2, 1.1, -6.4, 23.3) C. (2.2, -1.1, -6.4, 7.6) D. (2.2, 1.1, -6.4, -12.4)
Find the values of the variables for which the statement is true, if possible.
= 
A. x = 6; y = 1; k = -6 B. x = 6; y = -6; k = 9 C. x = 9; y = 5; k = -6 D. x = -6; y = -1; k = 6