Re: Coding for Mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg100596] Re: [mg100555] Coding for Mathematica*From*: "David Park" <djmpark at comcast.net>*Date*: Tue, 9 Jun 2009 03:53:20 -0400 (EDT)*References*: <1636751.1244442028734.JavaMail.root@n11>

I think that the problem may be that you typed in the "In[1]:=" portion of the statements. Mathematica generates that, you don't need to type it. Copy and paste the following into your notebook, evaluate, and you will see the results immediately. (Each statement begins on a new line, but they can all be in one cell and evaluated all at once.) (* David Park, 06/08/09 *) (* Newton's Method *) f[x_] := x^2 - 2 x[1] = 1.0 For[n = 1, n < 10, n++, {x[n + 1] = x[n] - f[x[n]]/f'[x[n]]; Print[n + 1, " ", N[x[n + 1], 10]];}] Plot[f[x], {x, 0, 2}] David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ From: FAQneeds [mailto:thegodfather7769 at aol.com] Im a first time user of Mathematica. So im trying to put in a command related to Newton's Method. I would just like to know if once im done typing this command in am i suppose to see the results immediately or do i have go to something in the program to see the results of my command. Here is the Code please can anyone tell me what im doing wrong i will be really grateful: In[1] :=(*your name,06/06/09*) In[2] :=(*Newton's Method*) In[3] := f[x_] := x^2 - 2 In[4] := x[1] = 1.0 In[5] := For[n = 1, n < 10, n++, {x[n + 1] = x[n] - f[x[n]]/f'[x[n]]; Print[n + 1, " ", N[x[n + 1], 10]];}] In[6] := Plot[f[x], {x, 0, 2}]