" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
r = ?
Un=a × r^n-1
U5 = 1/2 × r^5-1
8 = 1/2 × r^4
r^4 = 16
r = 2
U5 = 1/2 . r ^ 5-1
8 = 1/2 . r^4
16 = r^4
2 = r