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3.3 Sequences and series (A-level only)

3.3 Sequences and series (A-level only)

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Question 118
a.

Find the first three terms, in ascending powers of xxx, of the binomial expansion of

14+x\displaystyle \frac{1}{\sqrt{4 + x}}4+x​1​

giving each coefficient in its simplest form.

[3]
b.

Hence find the first three terms, in ascending powers of xxx, of the binomial expansion of

14−x2\displaystyle \frac{1}{\sqrt{4 - x^2}}4−x2​1​

[2]
Markscheme

3.3 Sequences and series (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.3 Sequences and series (A-level only)

200 exam-style questions on CCEA A Level Maths 3.3 Sequences and series (A-level only), covering 3.3.1 Sequences and series (A-level only), 3.3.2 Sequences and series (A-level only), 3.3.3 Sequences and series (A-level only), 3.3.4 Sequences and series (A-level only), 3.3.5 Sequences and series (A-level only), 3.3.6 Sequences and series (A-level only), 3.3.7 Sequences and series (A-level only), and 3.3.8 Sequences and series (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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