11) Find [ f (x) g(x)]' =. A) [(1/x) – (In x) tan x] /sec x by Product Rule. 11) B) [(1/x) + (In x) tan x] sec x C) [(1/x) + (In x) tan x] /sec2 x D) ( sec x tan x )/x 12) Find [ f (x) / g(x) ]' =, A) [(1 /x) sec x – (In x) sec x tan x]/sec2 x C) [1/ x - 1/sec x tan x ]/sec2 x by Quotient Rule. 12) %3D B) 1 / [x sec x tan x] D) [(In x)/ x- sec x /tan2 x ] 13) Find [ f (g(x))]' = A) cos x by Chain Rule. B) tan x 13) C) cot x D) – sin x

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