Solve the absolute value equation.
= 
A. x = - 
B. x = - 
, 
C. no solution
D. x = - 
, - 
Answer: D
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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
Use the given values of the variable to make a vertical table of solutions for the equation.y = 
, x = -3, 3, 5, 7
A. 
B. 
C. 
D. 
Find the LCD of the given rational expressions.
; 
A. 100x3y B. 100x2y C. 100xy3 D. 100xy2
Write the first four terms of the sequence.an = (-3)n
A. -3, -9, -27, -81 B. -1, -3, -9, -27 C. -3, 9, -27, 81 D. -1, 8, -27, 64