Post a New Question
posted by Mary Wednesday, March 20, 2013 at 4:42pm.
with respect to x f(cos x) if f'(x)= 1/x find (f(cos x))' i got tan x sec x this is wrong. please explain. thank you
if f'(x) = 1/x f(cos x)' = 1/cosx * -sinx = -tanx
More Related Questions