Timeline for How can I avoid getting the message Solve::ratnz?
Current License: CC BY-SA 3.0
26 events
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| May 15, 2021 at 14:32 | history | edited | Michael E2 |
edited tags
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| Sep 1, 2015 at 15:53 | comment | added | m_goldberg | Please do not bring up more and more issues in comments. This site is not a discussion forum. I have given your problem a lot of time;I do not more time to give to it. | |
| Sep 1, 2015 at 15:43 | comment | added | Lucas G Leite F Pollito | @m_goldberg , why cant i find a value only for minroot ? try to put minroot[10,10] and will give [Sqrt]Root[ 24414062500 - 219966549985 #1 + 881077612635 #1^2 - 2059507857936 #1^3 + 3096595115670 #1^4 - 3106870312500 #1^5 + 2081517656250 #1^6 - 899409843750 #1^7 + 228515625000 #1^8 - 26611328125 #1^9 + 244140625 #1^10 &, 2] | |
| Aug 28, 2015 at 1:19 | comment | added | m_goldberg |
I am not sure I understand your most recent question, but why don't you try it and see what happens. When I set he interval for b to be [1, 10] , I get the same results for rootmin for those values of g that gave values in the range [1, 2], but I also was able to get values of rootmin at least down to g = 0.05. I didn't try any smaller values of g,
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| Aug 27, 2015 at 23:44 | comment | added | Lucas G Leite F Pollito | @m_goldberg if i increase the interval to [1,10] for example, it will give me the same results ? | |
| Aug 27, 2015 at 22:58 | comment | added | m_goldberg |
There were a pair of parentheses missing from the definition of aA. I have edited my answer below to fix that. Copy the repaired definition of aA and try using it.
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| Aug 27, 2015 at 22:43 | comment | added | m_goldberg | Perhaps there is a typo in the code I posted. I'll look into it and get back to you. | |
| Aug 27, 2015 at 12:06 | comment | added | Lucas G Leite F Pollito | @m_goldberg, give this error too .. The integrand 1/(r^2 Sqrt[1-b^2/r^2-((13122 \ (Power[<<2>>]+Times[<<2>>]+Times[<<3>>]))/9765625-27/125 \ (Power[<<2>>]+Times[<<2>>]+Times[<<3>>]))/g^2]) has evaluated to \ non-numerical values for all sampling points in the region with \ boundaries {{[Infinity],0.` +minroot[g,b]}}. >> | |
| Aug 27, 2015 at 12:00 | comment | added | Lucas G Leite F Pollito | @m_goldberg, i copy your code , but there is not working, all my rootmin values gives the same 1.5708, no matter g value ... and there is an error Inappropriate parameter: MaxRecursion -> i. >> ... and the aA values gives the same too for all values of g and b ... can you test again and tell me later ? thanks | |
| Aug 27, 2015 at 1:52 | answer | added | m_goldberg | timeline score: 3 | |
| Aug 27, 2015 at 1:30 | history | reopened |
bbgodfrey m_goldberg C. E.♦ Dr. belisarius J. M.'s missing motivation♦ |
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| Aug 26, 2015 at 19:49 | comment | added | m_goldberg |
The reopen votes aren't coming as fast as I would like. In short, the reason you not getting results for rootmin[.3] is that Re[aA[.3, b, 5]] == 0 has no real roots for b in the interval [1, 2]. Further there are no real roots in that interval for g in [0, 3.6].
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| Aug 26, 2015 at 18:54 | comment | added | m_goldberg |
I hope this question will be reopened. Now that you have supplied a definition for minroot, it is pretty clear what your problem is, and I have an answer I would like to post.
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| Aug 26, 2015 at 18:29 | history | edited | m_goldberg | CC BY-SA 3.0 |
deleted 10 characters in body
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| Aug 26, 2015 at 16:18 | review | Reopen votes | |||
| Aug 27, 2015 at 1:33 | |||||
| Aug 26, 2015 at 16:02 | comment | added | Lucas G Leite F Pollito | @m_goldberg , sorry ... now its ok ... any ideas ? | |
| Aug 26, 2015 at 16:02 | history | edited | Lucas G Leite F Pollito | CC BY-SA 3.0 |
added 450 characters in body
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| Aug 26, 2015 at 11:25 | history | closed |
MarcoB Yves Klett dr.blochwave m_goldberg Sjoerd C. de Vries |
Needs details or clarity | |
| Aug 26, 2015 at 8:20 | comment | added | m_goldberg |
Please edit the question and give a definition for your function minroot.
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| Aug 26, 2015 at 8:19 | history | edited | m_goldberg | CC BY-SA 3.0 |
Routine clean-up
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| Aug 26, 2015 at 8:03 | history | edited | m_goldberg | CC BY-SA 3.0 |
Routine clean-up
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| Aug 26, 2015 at 4:34 | review | Close votes | |||
| Aug 26, 2015 at 11:25 | |||||
| May 20, 2015 at 15:45 | history | edited | Lucas G Leite F Pollito | CC BY-SA 3.0 |
edited title
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| May 13, 2015 at 12:16 | comment | added | Lucas G Leite F Pollito | @Mahdi, minroot[g,b] is a value of r , and rootmin[g,b] is a value of b , so they are differents ... do you have an ideia of all this errrors ? | |
| May 12, 2015 at 21:12 | comment | added | Mahdi |
I get a bunch of different errors as well: NIntegrate::inumr, FindRoot::nlnum etc. Also, in the definition aA, you use minroot[g,b]; Is it the same as rootmin[g,b]?
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| May 12, 2015 at 18:40 | history | asked | Lucas G Leite F Pollito | CC BY-SA 3.0 |