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Better Root Finder 4 84 (4/15/2007 4:55:41 AM) comp.lang.idl-pvwave IDL's fx_root seems very limited; when I want to find the root of say x^3 - 8 with the initial guess vector [-1,-100,100], IDL returns a complex number: ( -1.00000, 1.73205). Is there a way that fx_roo... Max