Question

Determine os 7 primeiros termos da sequência: = 5.n + 3, n ∈ ​

Answer 1

$\large Os ~7 ~primeiros ~termos ~ \Rightarrow ~S = ( 8, 13, 18,23, 28, 33, 38 )$

Substituir n por números naturais exceto o zero .  N* =  {1, 2, 3, 4, 5, 6, 7...}

an = 5n + 3

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$an = 5n + 3\\\\a1 = 5 ~. ~1 + 3\\\\a1 = 5 + 3\\\\a1 = 8\\\\\\an = 5n + 3\\\\a2 = 5 ~. ~2 + 3\\\\a2 = 10 + 3\\\\a2 = 13\\\\\\an = 5n + 3\\\\a3 = 5 ~. ~3 + 3\\\\a3 = 15 + 3\\\\a3 = 18$                           $an = 5n + 3\\\\a4 = 5 ~. ~4 + 3\\\\a4 = 20 + 3\\\\a4 = 23\\\\\\an = 5n + 3\\\\a5 = 5 ~. ~5 + 3\\\\a5 = 25 + 3\\\\a5 = 28\\\\\\an = 5n + 3\\\\a6 = 5 ~. ~6 + 3\\\\a6 = 30 + 3\\\\a6 = 33$

$an = 5n + 3\\\\a7 = 5 ~. ~7 + 3\\\\a7 = 35 + 3\\\\a7 = 38$

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