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rtoy / maxima

A Clone of Maxima's repo
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Name of function changes result #804

Open rtoy opened 4 months ago

rtoy commented 4 months ago

Imported from SourceForge on 2024-07-03 11:32:06 Created by danielvolinski on 2021-01-13 18:52:07 Original: https://sourceforge.net/p/maxima/bugs/3705

While using package "odes" I found out that the name of function changes the result:

load(odes)$
Eq:6*('diff(u(x),x,2))+6*x*('diff(u(x),x,1))+18*u(x)-6*x=0;
ode2taylor(Eq,0,0,3/2,10); => Error
Eq:subst([u(x)=y(x)],Eq);
ode2taylor(Eq,0,0,3/2,10); => Solution

In order to get the result, you have to express the equation in terms of y(x). u(x) is not accepted. Morover, the error message is cryptic.

Daniel Volinski

rtoy commented 4 months ago

Imported from SourceForge on 2024-07-03 11:32:08 Created by robert_dodier on 2021-01-23 04:10:51 Original: https://sourceforge.net/p/maxima/bugs/3705/#87c9