Question

Całe zadanie 3.39 daje naj :)

Answer 1

a₁=3 q=2
a₂ = a₁q = 3*2 =6
a₃ = a₂q = 6*2 =12
a₄ = a₃q = 12*2 =24
a₅ = a₄q = 24*2 =48

a₂ =5/2 q=1/2
a₁ = a₂/q = 5/2 : 1/2 = 5
a₃ = a₂q = 5/2*1/2 = 5/4
a₄ = a₃q = 5/4*1/2 = 5/8
a₅ = a₄q = 5/8*1/2 = 5/16

a₁ = -4  a₄ = 1/2
an = a₁qⁿ⁻¹
a₄ = a₁q³
1/2=-4*q³
q³ = -1/8
q = -1/2
a₂ = a₁q = -1/2*-4 =2
a₃ = a₂q = -1/2*2 =-1
a₅ = a₄q = -1/2*-1 = 1/2

a₁ = 5   a₃/a₂ =-1/2
q = -1/2
a₂ = a₁q = -1/2*5 =-5/2
a₃ = a₂q = -1/2*-5/2 = 5/4
a₄ = a₃q = -1/2*5/4 =-5/8
a₅ = a₄q = -1/2*-5/8 = 5/16