Resposta :
[tex]A_n = A_1 + (n-1)r[/tex]
[tex]-186 = 1 - 11(n-1)[/tex]
[tex]-187 = -11n + 11[/tex]
[tex]11n = 198[/tex]
[tex]\boxed{n = 18}[/tex]
[tex]-186 = 1 - 11(n-1)[/tex]
[tex]-187 = -11n + 11[/tex]
[tex]11n = 198[/tex]
[tex]\boxed{n = 18}[/tex]
r= -11 , a1 = 1 e o an= -186
- 186 = 1 + (n-1)(-11)
-186 =1 - 11n + 11
11n = 186 + 1 + 11
11N = 198
N =18
- 186 = 1 + (n-1)(-11)
-186 =1 - 11n + 11
11n = 186 + 1 + 11
11N = 198
N =18