Re: Mathematica Help Urgent (Very New Beginner)
- To: mathgroup at smc.vnet.net
- Subject: [mg93387] Re: Mathematica Help Urgent (Very New Beginner)
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Wed, 5 Nov 2008 04:57:13 -0500 (EST)
On 11/4/08 at 6:17 AM, derekcashel at yahoo.com (Derek) wrote:
>I am just beginning to learn to use Mathematica, and need to create
>a table of values. I would like to be able to input x-values and
>have the table display f(x), f'(x), and possibly f''(x) for a given
>function. I have already specified the function, and I have found
>the following input creates tables:
>Table[{x,f[x]},{x,-5,5,.5}]
>My problem is this: I would like to input specifc x-values, rather
>than use set intervals as defined in {x,-5,5,.5} above. Is there a
>way to specify a list of specific x values so that Mathematica
>computes the values of f[x] in table form?
Easily done using Map and a pure function. For example,
generate some data
In[41]:= RandomInteger[10, {5}]
Out[41]= {1,9,3,10,5}
and
In[42]:= {#, f[#]} & /@ Sort[%]
Out[42]= {{1, f[1]}, {3, f[3]}, {5, f[5]}, {9, f[9]},
{10, f[10]}}
gives the desired table