NRoots

NRoots[lhs==rhs,var]

yields a disjunction of equations which represent numerical approximations to the roots of a polynomial equation.

Details and Options

Examples

Basic Examples  (1)

Numerically find the roots of a polynomial:

Change the result to rules:

Test the roots:

Introduced in 1988
 (1.0)
 |
Updated in 2007
 (6.0)