" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
r= -6/3 = - 2
Un = 768
a rⁿ⁻¹ = 768
3.(-2)ⁿ⁻¹ = 768
(-2)ⁿ⁻¹ = 768/3 = 256= (-2)⁸
n - 1= 8
n = 9