functions in zroots.i - l

    laguerre(a,x)  


Given the coefficients a(1:m+1) of the m'th degree  
complex polynomial Sum(a(i)*x^(i-1)) and a guess x, returns a root.  
See Numerical Recipes (Press, et. al., Cambridge Univ. Press 1988),  
section 9.5.  
Interpreted function, defined at i/zroots.i   line 70