#
# Numerical Mathematics and Computing, Fifth Edition
# Ward Cheney & David Kincaid
# Brooks/Cole Publ. Co.
# (c) 2003
#
# file:  fun_roots
#
# Evaluate zeroes of the functions f(x) = x^3 - 3x + 1, 
# and g(x) = x^3 - 2sin(x)

 fsolve(x^3 - 3*x + 1, x, 0..1);
 fsolve(x^3 - 2*sin(x), x, 0.5..2);