Question

1°determine o termo geral da pa (-19, -15, -11)

2° determine o termo geral da pa (3, 9, 15)

​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\mathsf{a_n = a_1 + (n - 1)r}$

$\mathsf{a_n = -19 + (n - 1)4}$

$\mathsf{a_n = -19 + 4n - 4}$

$\boxed{\boxed{\mathsf{a_n = 4n - 23}}}\leftarrow\textsf{1\ª\:quest{\~a}o}$

$\mathsf{a_n = a_1 + (n - 1)r}$

$\mathsf{a_n = 3 + (n - 1)6}$

$\mathsf{a_n = 3 + 6n - 6}$

$\boxed{\boxed{\mathsf{a_n = 6n - 3}}}\leftarrow\textsf{2\ª\:quest{\~a}o}$