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qsimp, qromb, qromo [message #39628]

Thu, 03 June 2004 12:46

gnarloo
Messages: 14
Registered: June 2004

Junior Member

Dear all,
I'm new to this newsgroup so first of all, hello everybody!

The problem i encountered is the following:

I tried to use
qsimp and qromb to integrate a couple of functions (scattering
problems, nothing special) but the system crashes..

I tried to integrate cos(x) between 0 and pi (the result is obviously
zero)
and these functions give out some kind of error message but not the
result..

so i turned to write the code myself as i used to do when i was an
undrgraduate student using old riemann sums and old fortran, but as
this approach is a bit time-consuming i have one question:

is there any trick I can use or these functions only sometimes work?
(for example if you integrate sin(x) on the same interval as above
they give out
the right result.

Personally I can't believe the problem is in the algorithm (Simpson
rule works, Romberg method I don't know it)...

thanks very much indeed for your help
bye
michael

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[Message index]

		qsimp, qromb, qromo By: gnarloo on Thu, 03 June 2004 12:46
		Re: qsimp, qromb, qromo By: K. Bowman on Thu, 10 June 2004 12:17

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