This is a list of indefinite sums (also known as antidifferences) of various functions. An indefinite sum ∑ x f ( x ) {\textstyle \sum _{x}f(x)} is the inverse of the forward difference operator Δ {\displaystyle \Delta } , defined as Δ f ( x ) = f ( x + 1 ) − f ( x ) {\displaystyle \Delta f(x)=f(x+1)-f(x)} .
This is a list of indefinite sums (also known as antidifferences) of various functions. An indefinite sum ∑ x f ( x ) {\textstyle \sum _{x}f(x)} is the inverse of the forward difference operator Δ {\displaystyle \Delta } , defined as Δ f ( x ) = f ( x + 1 ) − f ( x ) {\displaystyle \Delta f(x)=f(x+1)-f(x)} .
Source: Wikipedia "List of indefinite sums" · CC BY-SA 4.0
Share this article: X · Bluesky