Solve the problem.In the study of alternating electric current, capacitive voltage is given byVc = - 
cos 2?ft,where f is the number of cycles per second, i is the maximum current, and t is the time in seconds. Solve the equation for t.
A. t = 2?f arccos 
B. t = 2?f cos 
C. t = 
arccos 
D. t = 
arccos 
Answer: D
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Simplify the expression.
+ 
A. 7
B. 
C. 
D. 
Find the indicated maxima or minima.Maximum of f(x, y, z) = xy + z,subject to x2 + y2 + z2 = 1
A. 1 when x = 1, y = 1, z = 0 B. 1 when x = 0, y = 0, z = 1 C. 1 when x = 0, y = 1, z = 0 D. 1 when x = 1, y = 1, z = 1
Provide the appropriate response.Explain how the graph of f(x) = 
+ 2 is obtained from the graph of g(x) = 
.
A. Shift the graph of g(x) 2 units to the right and 2 units up. B. Shift the graph of g(x) 2 units to the right and 2 units down. C. Shift the graph of g(x) 2 units to the left and 2 units down. D. Shift the graph of g(x) 2 units to the left and 2 units up.
Determine whether the following is always true or not always true. Given reasons for your answers.
= 
What will be an ideal response?