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: | 293 |
Nodes: | 16 (2 / 14) |
Uptime: | 233:55:06 |
Calls: | 6,624 |
Files: | 12,172 |
Messages: | 5,319,635 |