October 2018 1 15 Report

rozwiaz uklad rownan , stosujac odpowiednie podstawienie np w punkcie a/ podstawienie : x+y = u i x-y=t

½ (x+y) - (x-y)/4=-1

3(x+y) -½(x-y) = 2

to pogrubione to kreska ulamkowa u gory jest x-y a na dole 4


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