Generalising the difference of two squares and cubes
lesson notes:07 sum & difference of powers
Generalising the difference of two squares and cubes
lesson notes:07 sum & difference of powers
Creating formulae to use when working with geometric series
lesson notes:06 sum of a geometric series
Deriving the formulae for the sum of an arithmetic sequence
lesson notes:05 sum of an arithmetic series
The sum of a sequence is a series, often abbreviated using sigma notation
lesson notes:04 sums of a sequence
Finding the middle of patterns using the mean
lesson notes:03 arithmetic & geometric means