NRoots
NRoots[lhs==rhs,var]
yields a disjunction of equations which represent numerical approximations to the roots of a polynomial equation.
Details and Options

- NRoots gives several identical equations when roots with multiplicity greater than one occur.
- NRoots has the following options:
-
MaxIterations Automatic maximum number of iterations to use Method Automatic method to use PrecisionGoal Automatic the precision sought StepMonitor None expression to evaluate at each step - Possible settings for the Method option include: "Aberth", "CompanionMatrix", and "JenkinsTraub".
Examples
Wolfram Research (1988), NRoots, Wolfram Language function, https://reference.wolfram.com/language/ref/NRoots.html (updated 2007).
Text
Wolfram Research (1988), NRoots, Wolfram Language function, https://reference.wolfram.com/language/ref/NRoots.html (updated 2007).
CMS
Wolfram Language. 1988. "NRoots." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2007. https://reference.wolfram.com/language/ref/NRoots.html.
APA
Wolfram Language. (1988). NRoots. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/NRoots.html