Write the imaginary number in terms of i.
A. 11i
B. ± 11
C. -i
D. -11i
Answer: A
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,
x in 
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, cos x = - 
B. sin x = 
, cos x = - 
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A. 
B. 
C. 
D. 
Find the extreme values of the function subject to the given constraint.
A. Maximum: none; minimum: 
at 
B. Maximum: none; minimum: 
at 
C. Maximum: none; minimum: 
at 
D. Maximum: none; minimum: 
at 