Daily

Random

Practice set

Baltic Way 2022 · Problem 1

Algebra

Let R+\mathbb R^+ denote the set of positive real numbers. Assume that f:R+→R+f:\mathbb R^+\to\mathbb R^+ is a function satisfying the equations

f(x3)=f(x)3andf(2x)=f(x)f(x^3)=f(x)^3\qquad\text{and}\qquad f(2x)=f(x)

for all x∈R+x\in\mathbb R^+. Find all possible values of f ⁣(22022)f\!\left(\sqrt[2022]{2}\right).

Change pool

When you’re ready

Review material becomes available with the next Daily.

Review

Topics

Functional equations · Sequences and recurrences · Equations and inequalities

Solutions

No verified local solution is currently available.

Contest context

Results from Baltic Way 2022

10 teams

Mean score
2.6 / 5
Scores of 4 or 5
5 / 10
Estonia
4 / 5

Score distribution

02
13
20
30
42
53
All team scores
TeamScore
Poland5 / 5
Germany5 / 5
Lithuania5 / 5
Estonia4 / 5
Denmark1 / 5
Latvia4 / 5
Sweden1 / 5
Norway0 / 5
Finland1 / 5
Iceland0 / 5