" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
r = a(n+1) - an = 7(n+1) -10 - (7n - 10) = 7n + 7 - 10 - 7n + 10 = 7
czyli: a1 = -3, r = 7
GOTOWE!!!