#f (x) = sin ^ 3x #, # D_f = RR #
#G (x) = sqrt (3x-1) #, # Dg = 1/3, + oo) #
#D_ (tåke) = {## AAX ##i##RR: ## X ##i## D_g #, #G (x) ##i##D_f} #
#X> = tredjedel #, #sqrt (3x-1) ##i## RR # #-># # X ##i## 1/3, + oo) #
# AAX ##i## 1/3, + oo) #,
- # (Tåke) '(x) = f (g (x)) g '(x) = f'(sqrt (3x-1)) ((3x-1)') / (2sqrt (3x-1)) #
#f '(x) = 3sin ^ 2x (sinx)' = 3sin ^ 2xcosx #
så # (Tåke) '(x) = sin ^ 2 (sqrt (3x-1)) cos (sqrt (3x-1)) * 9 / (2sqrt (3x-1)) #
