Question

escreva uma sequência de cinco termos sabendo que o primeiro termo e -2 e cada termo eo dobro do anterio

Answer 1

P.G : $\mathtt{A_n = A_1~.~q^{n-1}}$

q = 2
A₁ = -2

$\mathtt{A_2 = -2~.~2^{2-1}} \\ \mathtt{A_2 = -2~.~2} \\ \boxed{\mathtt{A_2 = -4}} \\ \\ \mathtt{A_3 = -2~.~2^{3-1}} \\ \mathtt{A_3 = -2~.~2^{2}} \\ \mathtt{A_3 = -2~.~4} \\ \boxed{\mathtt{A_3 = -8}} \\ \\ \mathtt{A_4 = -2~.~2^{4-1}} \\ \mathtt{A_4 = -2~.~2^{3}} \\ \mathtt{A_4 = -2~.~8} \\ \boxed{\mathtt{A_4 =-16 }} \\ \\ \mathtt{A_5 = -2~.~2^{5-1}} \\ \mathtt{A_5 = -2~.~2^{4}} \\ \mathtt{A_5 = -2~.~16} \\ \boxed{\mathtt{A_5 = -32}}}$

Resposta : {-2 , - 4 , - 8 , -16 , - 32}