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From: riya on 23 Jul 2010 01:53
Hi
I am running
subs(TL5{2:d-1},TL3{:},TL4{:});
which gives error as
??? Error using ==> sym.subs
Too many input arguments.
tell me the reason and solution please
>thank you
From: Walter Roberson on 23 Jul 2010 02:05
riya wrote:
> Hi I am running subs(TL5{2:d-1},TL3{:},TL4{:});
> which gives error as ??? Error using ==> sym.subs
> Too many input arguments.
> tell me the reason and solution please
>> thank you

Read the command description!!

http://www.mathworks.com/access/helpdesk/help/toolbox/symbolic/subs.html
From: riya on 23 Jul 2010 02:18
Walter Roberson <roberson(a)hushmail.com> wrote in message <Tia2o.27146$xZ2.7394(a)newsfe07.iad>...
> riya wrote:
> > Hi I am running subs(TL5{2:d-1},TL3{:},TL4{:});
> >
>oh
>i have corrected the syntax to
subs(TL5{2},{TL3{:}},{TL4{:}}); which gives following error
>??? Error using ==> sym.sym>char2sym
Not a valid symbolic expression.

Error in ==> sym.sym at 92
S = char2sym(x);

Error in ==> sym.subs at 219
NEWf = idrep(char(NEWf),char(sym(OLDexpr{j})),char(sym(NEWexpr{j})));

Error in ==> subs at 60
r = subs(sym(f),varargin{:});
help me
From: Walter Roberson on 23 Jul 2010 02:37
riya wrote:
> Walter Roberson <roberson(a)hushmail.com> wrote in message
> <Tia2o.27146$xZ2.7394(a)newsfe07.iad>...
>> riya wrote:
>> > Hi I am running subs(TL5{2:d-1},TL3{:},TL4{:});
>> >
>> oh i have corrected the syntax to
> subs(TL5{2},{TL3{:}},{TL4{:}}); which gives following error
>> ??? Error using ==> sym.sym>char2sym
> Not a valid symbolic expression.
>
> Error in ==> sym.sym at 92
> S = char2sym(x);
>
> Error in ==> sym.subs at 219
> NEWf =
> idrep(char(NEWf),char(sym(OLDexpr{j})),char(sym(NEWexpr{j})));
>
> Error in ==> subs at 60
> r = subs(sym(f),varargin{:});
> help me

{TL3{:}} is more briefly written as simply TL3

We would need to see TL5{2} and TL3 and TL4 in order to give you advice
as to why your symbolic expressions are invalid.
From: riya on 23 Jul 2010 03:27
my TL5 is
TL5{:}

ans =

'A,B,y,D,E,F,G,H,I,J,K,L,N,M,O,P,Q,R,S1,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n'
ans =
'1/rc+s*cgs2+(s*C3)/(1+s*R3*C3)+s*cgb2'
ans =
'-1/rc'
ans =
'-gm2'
ans =
's*cgd3+s*cgs4+s*cgd4+(s*Cx+gx+s*Cy+s*s*Rx*Cy*Cx+s*Rx*Cy*gx)/(1+s*Cx*Rx+gx*Rx)+s*cgs5[index]+s*cgd5+s*cgb4+s*cgb5'
etc
TL3{:}
ans =
gm2
ans =
cgs2
ans =
cgb2
etc;;;
and TL4{:}
ans=
5.678
ans=4.92
etc
so i want to substitute the values gm2 ,cgs2 etc from TL4 into TL5{2:end}
help.....
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