Series — Algebra II, what it means and where it is taught
The sum of the terms of a sequence.
Taught in Algebra II.
Where it is taught
What it rests on
Work through these first if this one does not settle.
- Sequence — An ordered list of numbers. The nth one is an.
Practise this idea
2 questions in the course bank use Series, in Series & Sigma Notation.
Problem 1
Which infinite series has a finite sum?
- 1+12+14+⋯
- 1+2+4+⋯
- 1+1+1+⋯
- 2+4+8+⋯
Worked answer
1+12+14+⋯
Only the first has |r|<1
The others grow without limit
Problem 2
Write 0.4 as a fraction in lowest terms.
Worked answer
4/9
0.41-0.1=0.40.9=49