Odpowiedzi

2009-12-07T00:53:26+01:00
A)
an =(-1)^n
a1 =(-1)^1 = -1
a2 =(-1)^2 = 1
a3 = -1
a4 = 1
a5 = -1
a6 = 1
a7 = -1
a8 = 1
Wykres ,to punkty o współrzędnych:
(1;-1),(2;1),(3;-1),(4;1),(5;-1),(6;1),(7;-1),(8;1)
b)
an = 12/(n +1)
a1 = 12/(1+1) =12/2 = 6
a2 = 12/(2+1) = 12/3 = 4
a3 = 12/(3+1) = 12/4 = 3
a4 = 12/(4+1) = 12/5 = 2,4
a5 = 12/(5+1) = 12/6 = 2
a6 = 12/(6+1) = 12/7
a7 = 12/(7+1) = 12/8 =1,5
a8 = 12/(8+1) = 12/9 = 4/3
Wykres ,to punkty o współrzędnych:
1;6),(2;4),(3;3),(4;2,4),(5;2).( 6; 12/7),(7; 1,5),(8; 4/3)