Question

Escreva os 8 primeiros termos da PG (-2,4, -8)

Answer 1

P.G.(-2 ,4 ,-8,16,-32,64,-128,256)
q = a 2 / a 1
q = 4/-2
q = -2
a 2 = a 1 . q = -2 * - 2 = 4
a 3 = a 2 . q = 4 * -2 = -8
a 4 = a 3 . q = -8 * -2 = 16
a 5 = a 4 . q = 16 * - 2 = -32
a 6 = a 5 * q = -32 * - 2 = 64
a 7 = a 6 . q = 64 * - 2 = -128
a 8 = a 7 . q = -128 * - 2 = 256