Question

Interpole oito meios aritméticos entre -2 e 43

Answer 1

k = 8 termos inseridos
n = k + 2 , n = 8 + 2 = 10 termos da PA
a10 = a1 + 9r
43 = -2 +9r
43 + 2 = 9r
45 = 9r
r =45/9 =5
( - 2, 3,8,13,18,23,28,33,38,43)