Graph the function.f(x) = x 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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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 sech 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 = (sech2 t)i - (sinh t)k
C. T = - 
(tanh t)i + 
j + 
(sech t)k; N = (-sech t)i - (sinh t)k
D. T = 
(tanh t)i + 
j + 
(sech t)k; N = (sech t)i - (tanh t)k
Mathematics
Determine whether the graph represents a function.
A. A function B. Not a function
Mathematics
Find the sum.
A. 
B. 
C. 22
D. - 
Mathematics
Decide whether the statement is true or false.-5 is a solution of 5x - 6 = -31.
A. True B. False
Mathematics