IGCSE Maths Edexcel A 4MA1

generate terms of a sequence using term-to-term and position-to-term definitions of the sequence

Including odd, even, squares, multiples and powers

find subsequent terms of an integer sequence and the rule for generating it

*5, 9, 13, 17, ... (add 4)

1, 2, 4, 8, ... (multiply by 2)*

use linear expressions to describe the $n$th term of arithmetic sequences

*1, 3, 5, 7, 9, ... $n$th term is $2n - 1$

$n$th term is $4n + 3$, write down the first 3 terms of the sequence*

understand and use common difference ($d$) and first term ($a$) in an arithmetic sequence

e.g. given 2nd term is 7 and 5th term is 19, find $a$ and $d$

know and use $n$th term $= a + (n-1)d$

find the sum of the first $n$ terms of an arithmetic series ($S_n$)

e.g. given 4 + 7 + 10 + 13 + ... find sum of first 50 terms