Question

Determine termo geral da PA (-1, 5, ...)

Answer 1

$PA~~\{-1,~5,~...\}\\\\\\ a_1=-1\\\\r=5-(-1)\to~~5+1=6\\\\ \\ a_n=a_1+(n-1)\times r\\\\\\ a_n=-1+(n-1)\times 6\to\\\\ a_n=-1+6n-6\to\\\\ \large\boxed{\boxed{a_n=6n-7}}$

Answer 2

a1 = -1
a2 = 5
n = 2
r = 5 - (-1) = 5 + 1 = 6  *******
an = a1 + (n-1)r
an = -1 + 1(6)
an = -1 + 6  = 5 ****
TERMO GERAL É O ÚLTIMO TERMO  QUE AQUI JÁ E  5 ****