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IB Mathematics: Applications and Interpretation HL · 12.1: Sequences & Series · 12.1.10

Sequences and series: revision Problem set B Answers

Skills

    1. (a) \(S_1=3\), \(S_2=16\)
    2. (b) \(u_1=3\), \(u_2=13\)
    3. (c) \(d=10\)
    4. (d) \(u_{15}=143\)
    5. (e) n = 20
    6. (f) n = 14

  2. \(u_1=82\)

    1. (a) \(d=7\)
    2. (b) \(u_1=-16\)
    3. (c) \(u_{40}=257\)
    4. (d) \(S_{80}=20840\)

  4. 13.5

  5. 64.1

In context

    1. (a) 131 euros
    2. (b) 2190 euros
    3. (c) 36 weeks
    1. (a) 24.0 km
    2. (b) 174 km

  3. 288 trees

Stretch

  1. \(u_1=2.5\), \(d=3\)

jmaths.xyz · AI HL · 12.1.10 Sequences and series: revision