On Friday, 11 December 2020 at 10:13:09 UTC+11, drhu...@gmail.com wrote:
why wolfram cannot find simple solution in many equations? These equations have a very simple solution. e.g.
d^2/dx^2-dy/dx *x-y*x-x^2=0
Click the dsolve button to solve it, then click the test button to test its solution in mathHand.com.
http://server.drhuang.com/input/?guess=dsolve%28ds%28y%2Cx%2C2%29-ds%28y%29*x-x*y-x%5E2%29&inp=ds%28y%2Cx%2C2%29-ds%28y%29*x-x*y-x%5E2
why wolfram cannot find simple solution in many equations? many examples, e.g.:
x*y"-y-x^2=0
x*y"-y-x^3=0
x*y"-y-x^4=0
......
mathHand.com can: http://server.drhuang.com/input/?guess=dsolve%28x*ds%28y%2Cx%2C2%29-y-x%5E2%29
http://server.drhuang.com/input/?guess=dsolve%28x*ds%28y%2Cx%2C2%29-y-x%5E3%29
(_!_)
Dr Huang kirjutas Neljapäev, 7. jaanuar 2021 kl 02:15:12 UTC+2:
On Friday, 11 December 2020 at 10:13:09 UTC+11, drhu...@gmail.com wrote:
why wolfram cannot find simple solution in many equations? These equations have a very simple solution. e.g.
d^2/dx^2-dy/dx *x-y*x-x^2=0
Click the dsolve button to solve it, then click the test button to test its solution in mathHand.com.
http://server.drhuang.com/input/?guess=dsolve%28ds%28y%2Cx%2C2%29-ds%28y%29*x-x*y-x%5E2%29&inp=ds%28y%2Cx%2C2%29-ds%28y%29*x-x*y-x%5E2
why wolfram cannot find simple solution in many equations? many examples, e.g.:
x*y"-y-x^2=0
x*y"-y-x^3=0
x*y"-y-x^4=0
......
mathHand.com can: http://server.drhuang.com/input/?guess=dsolve%28x*ds%28y%2Cx%2C2%29-y-x%5E2%29
http://server.drhuang.com/input/?guess=dsolve%28x*ds%28y%2Cx%2C2%29-y-x%5E3%29
| Sysop: | Keyop |
|---|---|
| Location: | Huddersfield, West Yorkshire, UK |
| Users: | 546 |
| Nodes: | 16 (2 / 14) |
| Uptime: | 15:20:12 |
| Calls: | 10,389 |
| Files: | 14,061 |
| Messages: | 6,416,911 |