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Re: Integration

  • To: mathgroup at
  • Subject: [mg90315] Re: Integration
  • From: Bill Rowe <readnews at>
  • Date: Sat, 5 Jul 2008 04:51:42 -0400 (EDT)

On 7/4/08 at 3:55 AM, eomer_28 at (Eomer) wrote:

>I would like to numerically integrate a particular function. I
>define f to be equal to that function. Then, I do
>N[Integrate[f,{x,0,1}]. The output is f. Why? Why don't I get an

How do you expect anyone to be able to answer your question when
you have provided no details as to you you defined f?

Does it help to have a working example? That is,

In[12]:= f = 2 x + 1;
NIntegrate[f, {x, 0, 1}]

Out[13]= 2.

In[14]:= g[x_] := Sin[x]

In[15]:= NIntegrate[g[x], {x, 0, \[Pi]/4}]

Out[15]= 0.292893

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