Y by Ygg, manuel153, Hantaehee, amatysten, Centralorbit, Adventure10, and 4 other users
Let
be the set of positive real numbers. Find all functions
such that, for all positive real numbers
,
,
and
, the following three conditions are satisfied:
(a)
,
(b)
,
(c)
.
(United Kingdom)






(a)

(b)

(c)

(United Kingdom)