This guide provides step-by-step instructions with examples how to extract a substring in Excel using various text functions.

Objective Function and Derivatives The input argument fun refers to an IML module that specifies a function that returns f, a vector of length m for least-squares subroutines or a scalar for other ...

Well, I need to get a median value for a set of numbers, from a query. To my surprise, Sql Server does not have a median function/sproc (well, if you install the analysis tools you do, but I can't ...

An old theorem of R. Nevanlinna states that if two distinct nonconstant meromorphic functions share four values counting multiplicities, then the functions are Mobius transformations of each other, ...