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3.4 Sequences and Series (A-level only)

3.4 Sequences and Series (A-level only)

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Question 95
a.

Find the first four terms, in ascending powers of xxx, of the binomial expansion of 1+6x\sqrt{1 + 6x}1+6x​, giving each term in its simplest form.

[3]
b.

Explain how you could use x=112\displaystyle x = \frac{1}{12}x=121​ in your expansion to find an approximation for 6\sqrt{6}6​. There is no need to carry out the calculation.

[2]
Markscheme

3.4 Sequences and Series (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.4 Sequences and Series (A-level only)

231 exam-style questions on WJEC A Level Maths 3.4 Sequences and Series (A-level only), covering 3.4.1 Sequences and Series (A-level only), 3.4.2 Sequences and Series (A-level only), 3.4.3 Sequences and Series (A-level only), 3.4.4 Sequences and Series (A-level only), 3.4.5 Sequences and Series (A-level only), 3.4.6 Sequences and Series (A-level only), and 3.4.7 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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