T1.1 Number patterns: sequences, series and sigma notation Flashcards
1
Q
What is a sequence?
A
A collection of numbers in a defined order.
2
Q
What is a series?
A
Adding all terms in a sequence
3
Q
How many types of series are there?
A
- Finite if it has fixed numbers, otherwise infinite
4
Q
What is a harmonic series?
A
General term is 1/r => 1+1/2+1/3+1/4+…+1/r+…
5
Q
Explain the sigma notation
A
The largest value on the top, bottom the smallest. “The summation of 1/r from r=1 to 20’
