September 2018 1 29 Report

Udowodnij, że :

1.  a^{2} + b^{2} + c^{2} \geq ab + ac + bc dla dowolnych a,b,c należących do R

2.  a^{2} + b^{2} + 2 \geq 2 (a+b) dla dowolnych a,b należących do R


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