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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
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