Hungary-Israel Binational 1991_4
Source:
October 28, 2008
quadraticsalgebrasystem of equationsalgebra proposed
Problem Statement
Find all the real values of for which the system of equations x\plus{}y\plus{}z\plus{}v\equal{}0 and \left(xy\plus{}yz\plus{}zv\right)\plus{}\lambda\left(xz\plus{}xv\plus{}yv\right)\equal{}0, has a unique real solution.