Find the derivative of the function.y = (cos 8x + tan x4)3
A. 
= 3(- sin 8x + 4x3 sec x4 tan x4)2
B. 
= 3(cos 8x + tan x4)2(-8 sin 8x + 4x3 sec2(x4))
C. 
= 3(cos 8x + tan x4)2(8 sin 8x + 4x3 cot2(x4))
D. 
= 3(cos 8x + tan x4)2
Answer: B
Mathematics
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