Răspuns:
Explicație pas cu pas:
a) a₁ = 2 ; r = 2
a₂=a₁+r = 2+2 = 4
a₃=a₂+r = 4+2 = 6 ; a₄ = 8 ; a₅ = 10
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b) a₁ = 2 ; r = -2
a₂=a₁+r =2-2 = 0
a₃=a₂+r =0-2 = -2 ; a₄ = -4 ; a₅ = -6
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c) a₁ = 3 ; r = -3
a₂=a₁+r = 3-3 = 0
a₃=a₂+r =0-3 = -3 ; a₄ = -6 ; a₅ = -9
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d) a₁ = 1/256 ; r = 2
a₂ = a₁+r = 1/256 + ²⁵⁶⁾2 = 513/256
a₃ = a₂+r = 513/256 + ²⁵⁶⁾2 = 1025/256
a₄ = a₃+r = 1025/256 +²⁵⁶⁾2 = 1537/256
a₅ = a₄+r = 1537/256 +²⁵⁶⁾2 = 2049/256
#copaceibrainly
