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Pearson Edexcel IAL Mathematics P2.4.4 Geometric sequences & series

Practise geometric terms, finite sums and sums to infinity in growth, decay and ratio models, including logs for thresholds.

Syllabus
First assessment 2019
Course
Mathematics YMA01
Level
AS

Exam points

  • apply geometric sums to repeated growth or decay contexts
  • use logarithms or inequalities to find the first term number meeting a bound

P2.4.4 - Geometric sequences and series question 1

[Maximum number: 3]

Find the value of

∑r=1∞6×(0.25)r\sum_{r=1}^{\infty} 6 \times(0.25)^{r}

(3)

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