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Question: why maple dsolve sometimes does not solve ode as odeadvisor says?

Question:why maple dsolve sometimes does not solve ode as odeadvisor says?

nm 10189 Maple 2024
ode dsolve differential-equations odeadvisor
June 05 2024
0

Any idea why this sometimes happens? odeadvisor says ode is quadrature but when asking it to solve it using quadrature sometimes it works and sometimes not.

Am I doing something wrong?

22020

> 

interface(version);

`Standard Worksheet Interface, Maple 2024.0, Windows 10, March 01 2024 Build ID 1794891`

> 

Physics:-Version();

`The "Physics Updates" version in the MapleCloud is 1754 and is the same as the version installed in this computer, created 2024, June 3, 20:39 hours Pacific Time.`

> 

restart;

18368

Example 1 that does not work

 
> 

ode:=diff(y(x),x)=-1;
DEtools:-odeadvisor(ode);

diff(y(x), x) = -1

[_quadrature]

> 

sol:=dsolve(ode,y(x),['quadrature']);

"sol := "

Example 2 that works

 
> 

ode:=diff(y(x),x)=x;
DEtools:-odeadvisor(ode);

diff(y(x), x) = x

[_quadrature]

> 

sol:=dsolve(ode,y(x),['quadrature']);

y(x) = (1/2)*x^2+c__1

 

 

Download sometimes_dsolve_works_on_quadrature_june_5_2024.mw
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