Question

Interpole 4 meios aritméticos entre 12 e 62

Answer 1

Encontrar  a razão da PA

an = a1 + ( n -1) . r
62 = 12 + ( 6 -1) . r
62 = 12 + 5r
50 = 5r
 r = 10 


an = a1 + ( n -1) . r =  an
an = 12 + ( 1 -1) .10  = 12
an = 12 + ( 2 -1) .10 =  22
an = 12 + ( 3 -1) .10  = 32
an = 12 + ( 4 -1) .10  = 42
an = 12 + ( 5 -1) .10  = 52
an = 12 + ( 6 -1) .10  = 62


PA = ( 12, 22, 32, 42, 52, 62)