A multiple root is a root with multiplicity 
, also called a multiple point
or repeated root. For example, in the equation 
, 1 is multiple (double) root.
If a polynomial has a multiple root, its derivative also shares that root.
Multiple Root
See also
Multiplicity, Root, Simple RootExplore with Wolfram|Alpha
References
Krantz, S. G. "Zero of Order n." §5.1.3 in Handbook of Complex Variables. Boston, MA: Birkhäuser, p. 70, 1999.Referenced on Wolfram|Alpha
Multiple RootCite this as:
Weisstein, Eric W. "Multiple Root." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/MultipleRoot.html