Re: integrate in pdiff

I don't have an answer to your question, and I can't even do this using antidiff, gradef, and the like:

(%i1) display2d : false$

(%i2) gradef(f(x,y), fx(x,y), fy(x,y))$

(%i3) depends(y,x)$

(%i4) rrr : diff(f(x,y),x);

(%o4) fy(x,y)*'diff(y,x,1)+fx(x,y)
(%i5) integrate(rrr,x);

(%o5) 'integrate(fy(x,y)*'diff(y,x,1)+fx(x,y),x)

(%i6) load(antid)

(no success)

Let us know what you discover.

--Barton
________________________________
From: Aleksas Domarkas <[email protected]>
Sent: Sunday, April 26, 2026 10:17 AM
To: <[email protected]> <[email protected]>
Subject: [Maxima-discuss] integrate in pdiff

Caution: Non-NU Email

load(pdiff);
r:diff(f(x,y(x)),x);

How integrate(r,x)  ?

I wont get  f(x,y(x))

I solve ode from Kamke 6.55
'diff(y,x,2)+('diff(y,x)^2+1)*(f(x,y)*'diff(y,x)+g(x,y))=0;

Aleksas

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