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[Octave-bug-tracker] [bug #57726] [octave forge] (symbolic) dsolve shoul

From: Mike Miller
Subject: [Octave-bug-tracker] [bug #57726] [octave forge] (symbolic) dsolve should return expression instead of equation
Date: Mon, 3 Feb 2020 17:42:07 -0500 (EST)
User-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Update of bug #57726 (project octave):

              Item Group:                   Other => Matlab Compatibility   
                  Status:                Wont Fix => Confirmed              
             Open/Closed:                  Closed => Open                   
                 Release:                   5.1.0 => dev                    
        Operating System:       Microsoft Windows => Any                    
                 Summary: [octave forge] (symbolic) double not working on
symbolic expressions => [octave forge] (symbolic) dsolve should return
expression instead of equation


Follow-up Comment #6:

Ok, I verified that the complete example does run in Matlab, thank you. If you
look closer, you can see that the main difference is the return value of
'dsolve'. In Matlab, 'dsolve' returns an expression, but Octave 'dsolve'
returns an equality.

If you run 'rhs' on the return value of Octave 'dsolve', you get the same
answer as Matlab.

So the compatibility bug here is that 'dsolve' should not return an equality
like "y(t) == expr", it should just return "expr". Does that look right to

Reopening and changing the summary.


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