RE: A Learning TableForm Problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg32858] RE: [mg32838] A Learning TableForm Problem*From*: "Florian Jaccard" <jaccardf at eicn.ch>*Date*: Sat, 16 Feb 2002 04:35:14 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Hello Carlos ! What you did is almost correct. In[1]:= f[x_] := x^3 - 4*x^2 - 2*x + 8; In[2]:= TableForm[Table[{i,f[i]},{i,1,2,0.1}],TableHeadings->{{},{"x","f(x)"}}] Maybe you should first enter f[x] and then use TableForm, like I did above. It works very good ! To make the right arrow, first type " - ", then " > " ! N.B. If you want to find a numrical approximation for the zero, use FindRoot ! It is very reliable if you use it in combination with a graph ! Meilleures salutations Florian Jaccard EICN-HES e-mail : jaccardf at eicn.ch -----Message d'origine----- De : Carlos [mailto:k9zm at frontiernet.net] Envoyé : ven., 15. février 2002 08:50 À : mathgroup at smc.vnet.net Objet : [mg32838] A Learning TableForm Problem I need to know why this isn't working for me. The example I am given is: Find an estimate for the zero of the Polynomial. f(x)=x^3-4x^2-2x+8 On a graph the estimated zero is between (1,2) and it asks us to divide the interval into tenths f[x_]:=x^3-4x^2-2x+8 TableForm[Table[{i,f[i]},{i,1,2,0.1}], TableHeadings>{None,{"x","f(x)"}}] The > is as close as I can get to a right arrow sign The example I have shows a table with 2 columns and appropriate numbers, but I cannot get this to display on Mathematica for me. Any ideas? Thanks Carlos