Question

Seja a PG (3,-6,12...)
A) calcule o 6 termo

B) obtenha a formula do termo geral

Answer 1

Ola Rayane

PG

u1 = 3
u2 = -6
u3 = 12

q = u2/u1 = -6/3 = -2

A) u6 = u1*q^5 = 3*(-2)^5 = -3*32 = -96 

B) un = u1*q^(n - 1) 

un = 3*(-2)^(n-1)