Question

при каких значениях x f(x)<0, если f(x)=3-2x/4x+1

Answer 1

f(x)=(3-2x)/(4x+1)=2(1,5-x)/4(x-0,25)=(1,5-x)/2(x-0,25)
(1,5-x)/4(x-0,25)<0
           -                                   +                                   -
____________0,25__________________1,5______________

x∈(-∞;0,25)∨(1,5;+∞)