• ← NIntegrate
• → Reals

O

WMA link

O[x]^n

Represents a term of order $x^n$.

O[x]^n is generated to represent omitted higher order terms in power series.

• • Series[1/(1-x),{x,0,2}]

When called alone, a `SeriesData` expression is built:

• • O[x] // FullForm