Question

interpolar de 13 meios aritméticos entre 2 e 30

Answer 1

Encontrar a razão da PA

an = a1 + ( n -1) . r

30 = 2 + ( 15 -1) . r

30 = 2 + 14r

28 = 14r

r = 2

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an = a1 + ( n -1) . r = an

a1 = 2 + ( 1 -1) .2 = 2

a2 = 2 + ( 2 -1) .2 = 4

a3= 2 + ( 3 -1) .2 = 6

a4 = 2 + ( 4 -1) .2 = 8

a5 = 2 + ( 5 -1) .2 = 10

a6 = 2 + ( 6 -1) .2 = 12

a7 = 2 + ( 7 -1) .2 = 14

a8 = 2 + ( 8 -1) .2 = 16

a9 = 2 + ( 9 -1) .2 = 18

a10 = 2 + ( 10 -1) .2 = 20

a11 = 2 + ( 11 -1) .2 = 22

a12 = 2 + ( 12 -1) .2 = 24

a13 = 2 + ( 13 -1) .2 = 26

a14 = 2 + ( 14 -1) .2 = 28

a15 = 2 + ( 15 -1) .2 = 30

PA = (2 , 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 )