Question

Determine os quatro primeiros termo da sequência dada por an=2n+4? Determine os quatro primeiro termo da sequência dada por: an=2n+4

Answer 1

$a_1~=~2\,.\,1~+~4\\\\a_1~=~2~+~4\\\\\boxed{a_1~=~6}\\\\\\a_2~=~2\,.\,2~+~4\\\\a_2~=~4~+~4\\\\\boxed{a_2~=~8}\\\\\\a_3~=~3\,.\,2~+~4\\\\a_3~=~6~+~4\\\\\boxed{a_3~=~10}\\\\\\a_4~=~4\,.\,2~+~4\\\\a_4~=~8~+~4\\\\\boxed{a_4~=~12}$