f(x)=(3/4-1/x)*(x-2)

прости, просто повторяла =

ой, прости

f′(x)=((34−1x)⋅(x−2))′==(34−1x)′⋅(x−2)+(34−1x)⋅(x−2)′==(−(1x)′)⋅(x−2)+(34−1x)⋅1==(−(−1x2))⋅(x−2)+(34−1x)Ответ:f′(x)=(−(−1x2))⋅(x−2)+(34−1x)