Consider the function 2 x a bx a b ( ) ; ( , 0)    where a and b are some positive constants; x is an independent variable. find x that maximizes 1. 1/2 x y / 2. x y / 3. 3/2 x y / hint: in (1), define 1/2 z x y ( ) /  and look for minimizing z.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540