(8) Find the differential for the function using logarithmic differentiation. y = (sin x) (sec); (A) Iny = sec r In (sin r) and so dyy'dr = (sin x)(secz)[ [sec r tan r In (sin r) + csc r) dr (B) In y sec r In (sin x) and so dy = y'dx = (sin x)(secr). secrtan z In (sin x) csc r dr (C) y = (sin x) sec dy = y'dr = (sin x) (sec z 1). dr z and so (D) y = (sin x) sec z and so dy = y'dx = (sin x) (secr-1).secx tan x da

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