Question

Determine os 10 primeiros termos das sequências dadas por:
a) an=n+2
b)an=5n-2
c)an=5n
d)an=5n-3
e)an=n³+5
f)an=2.5n

Answer 1

a) an=n+2

a1 = 3 ; a2 = 4 ;a3 = 5 ;a4 =6 ;a5 = 7 ;a6 = 8 ;a7 = 9 ;a8 =10;a9 = 11 ;a10=12

(3,4,5,6,7,8,9,10,11,12)
=========================================================
b)an=5n-2

a1 = 3 ; a2 = 8 ;a3 = 13 ;a4 =18 ;a5 =23 ;a6 = 28 ;a7 = 33 ;a8 =38 ;a9 = 43 ;a10=48

(3,8,13,18,23,28,33,38,43,48)
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c)an=5n

a1 = 5 ; a2 = 10 ;a3 =15 ;a4 =20 ;a5 = 25 ;a6 = 30 ;a7 =35 ;a8 =40;a9 = 45 ;a10=50

(5,10,15,20,25,30,35,40,45,50)
=========================================================
d)an=5n-3

a1 = 2 ; a2 = 7 ;a3 = 12 ;a4 =17 ;a5 =22 ;a6 = 27 ;a7 =32 ;a8 =37;a9 = 42 ;a10=47

(2,7,12,17,22,27,32,37,42,47)
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e)an=n³+5

a1 = 6 ; a2 = 13 ;a3 =32 ;a4 =69 ;a5 =130 ;a6 =221 ;a7 =348 ;a8 =517        ;a9 =734 ;a10=1005

(6,13,32,69,130,221,348,517,734,1005)
=========================================================
f)an=2.5n

a1 =10 ; a2 = 20 ;a3 =30 ;a4 =40 ;a5 = 50 ;a6 = 60 ;a7 =70 ;a8 =80;a9 = 90 ;a10=100


(10,20,30,40,50,60,70,80,90,100)