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1.7 D: Sequences and series

1.7 D: Sequences and series

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Question 4

The first three terms, in ascending powers of xxx, in the expansion of (1+px)n(1 + px)^n(1+px)n are 1+18x+135x21 + 18x + 135x^21+18x+135x2

where n n\,n is a positive integer and p p\,p is a constant.

Find the values of n n\,n and ppp.

[6]
Markscheme

1.7 D: Sequences and series Questions

  1. A Level
  2. /Maths
  3. /1.7 D: Sequences and series

308 exam-style questions on AQA A Level Maths 1.7 D: Sequences and series, covering 1.7.1 Binomial expansion, 1.7.2 Types of sequence (A-level only), 1.7.3 Sigma notation (A-level only), 1.7.4 Arithmetic sequences and series (A-level only), 1.7.5 Geometric sequences and series (A-level only), and 1.7.6 Sequences and series in modelling (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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