Question

Interpole 4 meios aritméticos entre 2 e 42 !

Answer 1

an = a1 + (n-1)r 42 = 2 + 5r 5r = 40 r = 8 PA 2,10,18,26,34,42.

Answer 2

an = 42

a1 = 2

n = 6

r = r

an = a1 + (n - 1) . r

42 = 2 + (6 - 1) . r

42 - 2 = 5 . r

40 = 5.r

r = 40 / 5

r = 8

( 2, 10 . 18 . 26 , 34 , 42)