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3.4 Sequences and Series (A-level only)

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Question 31
a.

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

116+x\displaystyle \frac{1}{\sqrt{16 + x}}16+x​1​

giving each coefficient in its simplest form.

[4]
b.

Write down the range of values of x x\,x for which the expansion is valid.

[1]
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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