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Zadanie 1 Podaj początkowe pięć wyrazów ciągu o wzorze ogólnym bn=5n-3/n + 1 (to jest w ułamku)
Zadanie 2 Wyznacz miejsce zerowe ciągu an=n/2 - 3 (n/2 w ułamku)
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2
n/2 - 3 = 0-----------------*2
n - 6 = 0
n= 6
szósty wyraz naszego ciągu = 0
1
bn=5n-3/n + 1
n=1
b1 = (5-3)/1+1 = 2/2 = 1
n=2
b2=(10-3)/2 +1 = 7/3
n=3
b3= (15-3)/3+1 =12/4 = 3
n=4
b4 = (20-3)/4+1 = 17/5
n=5
b5 = (25-3)/5+1 = 22/6
1.
5n-3
bn = ---------
n+1
b1 = (5*1-3)/(1+1) = 2/2 = 1
b2 = (5*2-3)/(2+1) = 7/3 = 2⅓
b3 = (5*3-3))/(3+1) = 12/4 = 3
b4 = (5*4-3)/(4+1) = 17/5 = 3⅖
b5 = (5*5-3)/(5+1) = 22/6 = 11/3 = 3⅔
2.
n
an = ----- - 3
2
an = 0
n/2 - 3 = 0 I*2
n-6 = 0
n = 6
a₆ = 0