Question

interpole 8 termos aritméticos entre - 5 e 49

Answer 1

Razão da PA

an = a1 + ( n -1) . r
49 = -5 + ( 10 -1) . r
49 = -5 + 9r
54 = 9r
 r = 6


===

an = a1 + ( n -1) . r  =  an
an = -5 + ( 1 -1) .6 = -5
an = -5 + ( 2 -1) .6 = v1
an = -5 + ( 3 -1) .6 = 7
an = -5 + ( 4 -1) .6 = 13
an = -5 + ( 5 -1) .6 = 19
an = -5 + ( 6 -1) .6  =  25
an = -5 + ( 7 -1) .6  = 31
an = -5 + ( 8 -1) .6  = 37
an = -5 + ( 9 -1) .6  = 43
an = -5 + ( 10 -1) .6 = 49


PA = ( -5, 1, 7, 13, 19, 25, 31, 37, 43, 49 )