Second Method of Solving IMO Optimization Contest Problem:
Find the minimum value of $xy$, given that $x^2+y^2+z^2=7$, $xy+xz+yz=4$, and $x, y$ and $z$ are real numbers.
The second method is the solution provided by a well-known mathematics retired professor from the University in the U.K.
Showing posts with label original equations are satisfied. Show all posts
Showing posts with label original equations are satisfied. Show all posts
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