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#51 2013-03-05 06:09:41
- anonimnystefy
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Re: Kummer and a tough integral.
Yes, it does.
But, what does it mean?
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#52 2013-03-05 06:14:20
- bobbym
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Re: Kummer and a tough integral.
Hmmm? Change that exp(-x) to sqrt(x) and change f(0,50 ) to f(0,1)
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#53 2013-03-05 06:19:48
- anonimnystefy
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Re: Kummer and a tough integral.
It says "Romberg failed to converge".
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#54 2013-03-05 06:21:27
- bobbym
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Re: Kummer and a tough integral.
Try adjusting rombergtol: 1.e-3
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#55 2013-03-05 06:22:55
- anonimnystefy
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Re: Kummer and a tough integral.
It is working and giving out: 0.66653268137515
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#56 2013-03-05 06:28:03
- bobbym
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Re: Kummer and a tough integral.
There should be a global variable called rombergit. What is its value?
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#57 2013-03-05 06:33:06
- anonimnystefy
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Re: Kummer and a tough integral.
It is 11.
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#58 2013-03-05 06:35:18
- bobbym
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Re: Kummer and a tough integral.
Set it 25. and rombergtol: 1.e-6, what happens?
You should know about these:
http://eagle.cs.kent.edu/MAXIMA/maxima_21.html
http://www.csulb.edu/~woollett/
get them if you do not.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#59 2013-03-05 07:03:18
- anonimnystefy
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Re: Kummer and a tough integral.
I get 0.66666657420034.
Thanks for the links. I will try 'em out.
Last edited by anonimnystefy (2013-03-05 07:06:28)
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#60 2013-03-05 07:08:59
- bobbym
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Re: Kummer and a tough integral.
Here is more:
http://maxima.sourceforge.net/documentation.html
I got
romberg(1/(cos(x)+x^2), x, 0, 100);
1.828017700397752
which is accurate. By setting rombergit to 200 and rombergtol to 1E-10.
Now you need to get a bfloat in there somehow.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#61 2013-04-03 06:41:27
- anonimnystefy
- Real Member
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Re: Kummer and a tough integral.
Hi bobbym
How do I get more accuracy out of NIntegrate?
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#62 2013-04-03 06:43:06
- bobbym
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Re: Kummer and a tough integral.
Easy, use WorkingPrecision-> some number.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#63 2013-04-03 06:51:05
- anonimnystefy
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Re: Kummer and a tough integral.
Ah, there it is. I found the AccuracyGoal and PrecisionGoal, but they didn't help.
Thanks!
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#64 2013-04-03 06:55:58
- bobbym
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Re: Kummer and a tough integral.
WorkingPrecision did not work?
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#65 2013-04-03 07:00:23
- anonimnystefy
- Real Member
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Re: Kummer and a tough integral.
It is working.
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#66 2013-04-03 07:00:48
- bobbym
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Re: Kummer and a tough integral.
The answer to d) i) is in the other thread.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.