if f'(x) = 1/x
f(cos x)' = 1/cosx * -sinx = -tanx
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
1 answer
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
1 answer