The reciprocal values are the corresponding x values. The so L ve command can also be used to find roots of a polynomial of degree less than four. For higher degree polynomials or polynomial equations, the so L ve command will try to find a numerical approximation of a real root after you have turned Derive in approximate mode. The system will ask you for the domain to search for a solution. A graph of the polynomial may indicate where to look for real roots.
Figure illustrates the root finding of a seventh degree polynomial.
In this screen dump you see that the original polynomial has two real roots that can be found analytically.