(* *) (* Numerical Mathematics and Computing, Fifth Edition *) (* Ward Cheney & David Kincaid *) (* Brooks/Cole Publ. Co. *) (* (c) 2003 *) (* No warranties implied or expressed. *) (* File: bisect *) (* Section 3.1 *) (* NSolve solves a polynomial equation numerically *) NSolve[x^3 -3x + 1 == 0,x] (* FindRoot searchs for a numerical solution to an equation starting at $x=2$ *) FindRoot[x^3 - 2*Sin[x] == 0,{x,2}]