Question

Даю 50 пунктов .Помогите.

Answer 1

при х = 1;
1.5/x +2x = 1.5/1 + 2*1 = 3.5
при х = 5;
1.5/5 + 2*5 = 0.3 + 10 = 10.3
при х = 3;
1.5/3 + 2*3 = 0.5 + 6 = 6.5

Answer 2

$f(x)= cfrac{3.7-2.2}{x} +2x= cfrac{1.5}{x} +2x \ f(1)= cfrac{1.5}{1} +2cdot1=1.5+2=3.5 \ f(5)= cfrac{1.5}{5} +2cdot5=0.3+10=10.3 \ f(3)= cfrac{1.5}{3} +2cdot3=0.5+6=6.5$