October 2018 2 14 Report

Oblicz różnicę i podaj wzór ogólny ciągu arytmetycznego (an).

1)a1 =6; a3=20

2)a1=-4; a4=5

3)a1=9; a6=6 1/2

4)a1=13; a10=-23

Końcowe wyniki powinny być takie:

1)r=7; an=7n-1

2)r=3; an=3n-7

3)r=-1/2; an=9 1/2- 1/2n

4)r=-4; an=17-4n


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