August 2018 1 20 Report
1.Wyznacz ciąg arytmetyczny mając dane:
a13=6
a22=-9
więc to chyba będzie:
a13=a1+12r
a22=a1+21r

6=a1+12r l *(-1)
-9=a1+21r

-6=-a1+12r
-9=a1+21r

-6=12r
-9=21r i co dalej?? mam to podzielic czy dodac?? zeby wyszlo r? no i jak dalej wyznaczyc ciag??


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