Tentukan turunan pertama dari f(x) = sec x

f(x) = sec x ==> f'(x) = sec x tan x

Bab Differensial
Matematika SMA Kelas X

f(x) = sec x
f(x) = 1/cos x = u/v

f(x) = u/v
f'(x) = (u' v - u v') / v²

f(x) = 1/cos x
f'(x) = (0 . cos x - 1 . (-sin x)) / cos² x
f'(x) = sin x / (cos x . cos x)
f'(x) = tan x . 1/cos x
f'(x) = tan x . sec x