My problem
by hacbachvothuong, Mar 29, 2025, 10:10 AM
Let $a,b,c$ be nonnegative real numbers. Prove that
by khanhsy, Mar 29, 2025, 9:21 AM
Let
be nonnegative real numbers such that
. Prove that:




This post has been edited 3 times. Last edited by khanhsy, 4 hours ago
Reason: edit
Reason: edit
Gheorghe Țițeica 2025 Grade 9 P2
by AndreiVila, Mar 28, 2025, 9:09 PM
Let
be three positive real numbers with
. Find the minimum value of the expression 



Gheorghe Țițeica 2025 Grade 8 P2
by AndreiVila, Mar 28, 2025, 8:51 PM
Let
be a positive integer and
. Also, let
and
be integers. Define
Let 
Prove that
. When does equality hold?
Dorel Miheț








Dorel Miheț
An inequality on triangles sides
by nAalniaOMliO, Mar 28, 2025, 8:26 PM
Numbers
are lengths of sides of some triangle. Prove the inequality


Inspired by old results
by sqing, Mar 28, 2025, 3:10 PM
A problem with non-negative a,b,c
by KhuongTrang, Mar 4, 2025, 3:50 PM
Problem. Let
be non-negative real variables with
Prove that
Equality holds iff
or
where 






Simple inequality
by sqing, Jul 24, 2017, 3:30 AM
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