# Math Help - terminology

1. ## terminology

what is the sequence property called when you get -1 +1 -1 +1 etc.

thanks!

2. I think you are looking for "alternating series"

3. Hello, ricey!

What is the sequence property called when you get: -1, +1, -1, +1, etc.

I suppose it might be called an "alternating sequence".

. . FYI: The general term is: . $(-1)^n\:\text{ for }n \,=\,1,2,3,\hdots$