Hi,

I'm learning about sequences and series in my calc 2 textbook. I have a question about this definition:

A sequence {

} is called

**increasing** if {

} < {

} for all

. It is called

**decreasing** if {

} > {

} for all

. It is called

**monotonic** if it is either increasing or decreasing.

Should that read "if it is *neither* increasing or decreasing." ?

It looks like a typo, but I'm not sure, so I thought I would ask for clarification. I tried some google searches but couldn't find a clear definition.

Thanks!