Question

Na PG (3,6, 12...) calcule:?
A- o 10 termo
B- a ordem do termo de valor 6144

Answer 1

a1 = 3
a2 = 6
q = 6/3 = 2 ****

a1q⁹  =  3 * 2⁹ = 3 * 512  = 1536 ****
an = 6144
3 * 2ⁿ⁻¹ = 6144
2ⁿ⁻¹ = 6144/3 =2048 = 2¹¹
n - 1 = 11
n = 11 + 1 = 12 ****