Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (cos x)x
A. ln x(cos x)x - 1
B. (cos x)x (ln cos x + x cot x)
C. ln cos x - x tan x
D. (cos x)x (ln cos x - x tan x)
Answer: D
Mathematics
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= 
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A. 
B. 
C. - 
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÷ 
A. 
B. 
C. 
D. 
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