Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = 0
B. x = 3, x = -3, x = 0
C. x = 3, x = 0
D. x = 3, x = -3
Answer: B
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Use a sum or difference identity to find the exact value.
A. 
B. 
C. 
D. 
An object moves in simple harmonic motion described by the given equation, where t is measured in seconds and d in meters . Find the maximum displacement, the frequency, and the time required for one cycle.d = 6 cos 5t meters
A. displacement = 6 meters; period = 5 ? seconds; f = 
oscillations/second
B. displacement = 6 meters; period = 
seconds; f = 
? oscillations/second
C. displacement = -6 meters; period = 
? seconds; f = 
oscillations/second
D. displacement = 6 meters; period = 
? seconds; f = 
oscillations/second