Timeline for How can I make assumptions in NDSolve?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Dec 24, 2022 at 2:37 | history | became hot network question | |||
| Dec 24, 2022 at 0:26 | history | edited | Michael E2 | CC BY-SA 4.0 |
Improved formatting
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| Dec 24, 2022 at 0:25 | answer | added | Michael E2 | timeline score: 5 | |
| Dec 23, 2022 at 21:00 | history | tweeted | twitter.com/StackMma/status/1606394219542847490 | ||
| Dec 23, 2022 at 19:20 | comment | added | Bob Hanlon |
Select[sol, And @@ (Positive[z[#]] & /@ {0, 5, 10}) /. # &]
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| Dec 23, 2022 at 19:08 | answer | added | Nasser | timeline score: 5 | |
| Dec 23, 2022 at 18:58 | comment | added | Youngsub Yoon | That's the reason why I am saying that my example is much more complicated. It is impossible to rearrange like this, because z[t], z'[t], y[t], y'[t] are related by two complicated equations that are expressed by exponential functions and polynomials. It's impossible to express y'[t] and z'[t] analytically in terms of y[t] and z[t]. | |
| Dec 23, 2022 at 18:51 | comment | added | mikado |
In this case, you could solve z'[t]==Sqrt[z[t]]. Can you rearrange your example in a similar way?
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| S Dec 23, 2022 at 18:32 | review | First questions | |||
| Dec 23, 2022 at 19:36 | |||||
| S Dec 23, 2022 at 18:32 | history | asked | Youngsub Yoon | CC BY-SA 4.0 |