Find all numbers u (if any) so that the given point (u, y) or (x, u) is on the unit circle.
A. ± 
B. ± 
C. ± 
D. None
Answer: B
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Find T, N, and B for the given space curve.r(t) = (cosh t)i + (sinh t)j + k
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 - (tanh t)k; 
D. T = - 
(tanh t)i + 
j + 
(sech t)k; N = (-sech t)i - (sinh t)k ; 
Solve the inequality and graph the solution on a number line.x2 + 2x - 8 > 0
A. 
B. 
C. 
D. 
Find the inverse of the one-to-one function.
?
?
A. 
B. 
?
C. 
D. 
E. inverse does not exist
Solve the system of equations algebraically for real values of x and y.
?
?
Please enter your answer as two ordered pairs in the form 
, 
. The pairs must be separated by a comma.
What will be an ideal response?