Prev: rotating an image
Next: Advanced Stop ODEs
From: Charlie Vlieland-Boddy on 22 Jul 2010 12:24
i couldnt find the syntax on MATLAB help.

Im not sure what im running.

Its MatlabR2009b

7.9.0.529

64-bit (MAC)


I tried

allvalues(Z,L)

but got

??? Undefined function or method 'allvalues' for input arguments of type 'sym'
From: Walter Roberson on 22 Jul 2010 12:53
Charlie Vlieland-Boddy wrote:
> i couldnt find the syntax on MATLAB help.
>
> Im not sure what im running.
>
> Its MatlabR2009b
>
> 7.9.0.529
>
> 64-bit (MAC)

http://www.mathworks.com/access/helpdesk/help/toolbox/mupad/stdlib/RootOf.html



> I tried
> allvalues(Z,L)
>
> but got
>
> ??? Undefined function or method 'allvalues' for input arguments of type
> 'sym'

I do not see a MuPad equivalent of allvalues() when I look around. *Possibly*
resubmitting the object to solve() but adding a MaxDegree option would attempt
to resolve polynomials of degree 3 and 4 (in my earlier posting I indicated
that degree 3 would be automatically resolved; I see from the Matlab solve()
documentation that degree 3 would normally be left in terms of RootOf()).

In general, asking for polynomials of degree 3 and 4 to be resolved
symbolically would involve adding a MaxDegree option to Matlab's solve() call.

It appears that in order to request numeric evaluation of expressions
involving RootOf, one should use float() in Matlab. On the other hand, it
appears that MuPad recommends that if you are going to be doing that and you
do not need the symbolic forms for some purpose, that you call the numeric
solver directly.
http://www.mathworks.com/access/helpdesk/help/toolbox/mupad/stdlib/solve.html
First  |  Prev  | 
Pages: 1 2
Prev: rotating an image
Next: Advanced Stop ODEs