Respostas
respondido por:
1
Encontrar a razão da PA
an = a1 + ( n -1) . r
38 = 5 + ( 12 -1) . r
38 = 5 + 11r
33 = 11r
r = 3
===
an = a1 + ( n -1) . r = an
an = 5 + ( 1 -1) .3 = 5
an = 5 + ( 2 -1) .3 = 8
an = 5 + ( 3 -1) .3 = 11
an = 5 + ( 4 -1) .3 = 14
an = 5 + ( 5 -1) .3 = 17
an = 5 + ( 6 -1) .3 = 20
an = 5 + ( 7 -1) .3 = 23
an = 5 + ( 8 -1) .3 = 26
an = 5 + ( 9 -1) .3 = 29
an = 5 + ( 10 -1) .3 = 32
an = 5 + ( 11 -1) .3 = 35
an = 5 + ( 12 -1) .3 = 38
PA = ( 5, 8, 11, 14, 17, 20, 23, 26, 29, 32, 35, 38 )
an = a1 + ( n -1) . r
38 = 5 + ( 12 -1) . r
38 = 5 + 11r
33 = 11r
r = 3
===
an = a1 + ( n -1) . r = an
an = 5 + ( 1 -1) .3 = 5
an = 5 + ( 2 -1) .3 = 8
an = 5 + ( 3 -1) .3 = 11
an = 5 + ( 4 -1) .3 = 14
an = 5 + ( 5 -1) .3 = 17
an = 5 + ( 6 -1) .3 = 20
an = 5 + ( 7 -1) .3 = 23
an = 5 + ( 8 -1) .3 = 26
an = 5 + ( 9 -1) .3 = 29
an = 5 + ( 10 -1) .3 = 32
an = 5 + ( 11 -1) .3 = 35
an = 5 + ( 12 -1) .3 = 38
PA = ( 5, 8, 11, 14, 17, 20, 23, 26, 29, 32, 35, 38 )
Helvio:
De nada.
respondido por:
0
resolução!
an = a1 + ( n - 1 ) r
38 = 5 + ( 12 - 1 ) r
38 = 5 + 11r
38 - 5 = 11r
33 = 11r
r = 33/11
r = 3
PA = { 5 , 8 , 11 , 14 , 17 , 20 , 23 , 26 , 29 , 32 , 35 , 38 }
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