1. a = – 1, d = 1/2 First term a₁ = a = - 1 Second term a₂ = a₁ + d = - 1 + 1/2 = - 1/2 Third term a₃ = a₂ + d = - 1/2 + 1/2 = 0 Fourth term a₄ = a₃ + d = 0 + 1/2 = 1/2.

    a = – 1, d = 1/2
    First term a₁ = a = – 1
    Second term a₂ = a₁ + d = – 1 + 1/2 = – 1/2
    Third term a₃ = a₂ + d = – 1/2 + 1/2 = 0
    Fourth term a₄ = a₃ + d = 0 + 1/2 = 1/2.

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    • 2
  2. a = –2, d = 0 First term a₁ = a = - 2 Second term a₂ = a₁ + d = - 2 + 0 = - 2 Third term a₃ = a₂ + d = - 2 + 0 = - 2 Fourth term a₄ = a₃ + d = - 2 + 0 = - 2

    a = –2, d = 0
    First term a₁ = a = – 2
    Second term a₂ = a₁ + d = – 2 + 0 = – 2
    Third term a₃ = a₂ + d = – 2 + 0 = – 2
    Fourth term a₄ = a₃ + d = – 2 + 0 = – 2

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    • 1