Re: NIntegrate & Integrate
- To: mathgroup at smc.vnet.net
- Subject: [mg100102] Re: NIntegrate & Integrate
- From: Erik Max Francis <max at alcyone.com>
- Date: Mon, 25 May 2009 06:13:33 -0400 (EDT)
- References: <gv7r1l$asp$1@smc.vnet.net>
Bill Rowe wrote:
> On 5/22/09 at 1:47 AM, kzhuravl at mtu.edu (Konstantin) wrote:
>> My output is:
>
>> 3.21059(NIntegrate)
>> -3.21059(Integrate)
>
>> The right answer is -3.21059.
>
>> Why does NIntegrate gave me wrong answer?
>
> I cannot reproduce your results above. I get the correct value
> by simply pasting your code up to the line for NIntegrate into a
> fresh session. That is:
>
> In[1]:= {a, b} = {8.76, 4.56};
> NIntegrate[2*Cos[x], {x, a, b}]
>
> Out[2]= -3.21059
>
> In[3]:= $Version
>
> Out[3]= 7.0 for Mac OS X x86 (64-bit) (February 19, 2009)
I also get the right answer on:
In[6]:= $Version
Out[6]= "7.0 for Linux x86 (32-bit) (January 30, 2009)"
--
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 18 N 121 57 W && AIM, Y!M, Skype erikmaxfrancis
Being in love for real / It ain't like a movie screen
-- India Arie