Question

Interpole quatro meios aritméticos, entre 2 e 37.

Answer 1

a1 = 2
an = 37
k = 4
r = (an-a1)/(k+1)
r = (37-2)/(4+1)
r = 35/5
r = 7
meios:
9, 16, 23, 30

Answer 2

an = a1 + (n -1) r

37 = 2 + ( 6 - 1) r

37 = 2 + 5r
37 - 2 = 5r
35 = 5r

r = 7

{ 2, 9, 16, 23, 30, 37}