Proposed by Daniel Sitaru-Romania
Solution 1 by Daniel Sitaru-Romania
Solution 2 by Alexander Bogomolny
http://www.cut-the-knot.org/arithmetic/algebra/InequalityWithDeterminants3.shtml
Published by Alexander Bogomolny
Proposed by Daniel Sitaru-Romania
Solution 1 by Daniel Sitaru-Romania
Solution 2 by Alexander Bogomolny
http://www.cut-the-knot.org/arithmetic/algebra/InequalityWithDeterminants3.shtml
Published by Alexander Bogomolny