Editing Piecewise linear function (section)

{{Short description|Type of mathematical function}}
{{Refimprove|date=March 2013}}

{{for|other uses of "piecewise linear"|Piecewise linear (disambiguation)}}
In [[mathematics]], a '''piecewise linear''' or '''segmented function''' is a [[real-valued function]] of a real variable, whose [[graph of a function|graph]] is composed of straight-[[line segment]]s.<ref>{{cite book | title = Technical Analysis And Applications With Matlab | page = 143 | first = William D. | last = Stanley | year = 2004 | publisher = Cengage Learning | isbn = 978-1401864811}}</ref>