Maxima can compute the definite integral just fine:
(%i1) integrate(exp(-((k-10)^2/4))*cos(k*x),k,minf,inf);
Is x zero or nonzero?
nonzero;
2
- x
(%o1) 2 sqrt(%pi) %e cos(10 x)
If you don't want Maxima to ask the (in the end, really unnecessary)
question about x being zero or nonzero, you can do an
assume(not(equal(x,0)));
before the integration.
As to the plot, it can be done using
plot2d(%,[x,-10,10]);
Integration of your input, Maxima's results, formatted text, and the plot is
not as nice as in Maple, but that's where tools like wxMaxima or Texmacs can
be of use.
Viktor
-----Original Message-----
From: maxima-admin@math.utexas.edu [mailto:maxima-admin at math] On
Behalf Of Den ís Fernández Cabrera
Sent: Sunday, June 05, 2005 7:08 AM
To: maxima@math.utexas.edu
Subject: Moving from Maple to Maxima
Hello,
I am a physics student, and a dedicated advocate of Free Software. I've
used Maple before I learnt that Maxima existed, and now I have switched
on. Trouble is, that I don't seem to be able to do certain things with
Maxima that I could (easily) with Maple. I know the options must be there,
but I just don't know how to trigger them.
1) Specifically, I'd like to reproduce this small demonstration of a wave
packet:
http://aiff.usc.es/~aldenis/var/maxima/paquetedeondas.fourier.integralinfini
ta.pdf
http://aiff.usc.es/~aldenis/var/maxima/paquetedeondas.fourier.integralinfini
ta.mws
These are PDF and MWS (¿Maple WorkSheet?) files outputted from Maple time
ago. I'd like to know how can I reproduce the same calculations and
graphics with Maxima. The file text is in galizan, but it is accessory:
mathematics are international :o)
2) I have also noticed that when I run Gnuplot through TeXmacs, it outputs
its graphics embedded in the editor, but when I trace graphics with Maxima
-- which, I understand, uses Gnuplot -- they appear in a separate window.
It also happens when I use the xMaxima interface, so it is not a TeXmacs
problem, I believe. ¿Any suggestions on how to fix this?
I'm using Maxima 5.9.1 with TeXmacs 1.0.5 on Debian Sid, for the record.
Thanks in advance,
Denís.
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