How to write a vector-valued function with vector input from the screen in MATLAB?

I am trying to do the following in MATLAB:

 1. input *from screen* a small positive integer M (between 1 and 8);
 2. input *from screen* M function expressions with variables `t, x1, x2, ... xM`; name for now these M functions f1,f2,...,fM;
 3. given a vector `v=[t,x1,x2,...,xM]`, evaluate each of the M functions with the input `v`;
 4. the output is a vector `Y=[y1,y2,...,yM]` where `y1=f1(v),y2=f2(v),...`.

I learned from this [old code][1] that I can do (1) and (2) with

     TRUE = 1;
     FALSE = 0;
     OK = FALSE;
     while OK == FALSE
     fprintf(1,'Input the number of equations\n');
     M = input(' ');
        if M <= 0 | M > 7
            fprintf(1,'Number must be a positive integer < 8\n');
        else
            OK = TRUE;
        end;
     end;
     ss = cell(M,1);
     for I = 1:M
        fprintf(1,'Input the function F_(%d) in terms of t and y1 ... y%d\n', I,M);
        fprintf(1,'For example: ''y1-t^2+1'' \n');
        kk = input(' ');
        ss{I} = kk;
     end;

How can I do (3) and (4)?

[1]: https://www.mathworks.com/matlabcentral/answers/uploaded_files/97690/ALG057.m

Answer 1

[jack]

I have just found that (3) and (4) can be done by the following code

TRUE = 1;
FALSE = 0;
OK = FALSE;
while OK == FALSE
    fprintf(1,'Input the number of equations\n');
    M = input(' ');
    if M <= 0 || M > 7
        fprintf(1,'Number must be a positive integer < 8\n');
    else
        OK = TRUE;
    end
end
ss = cell(M,1);
for I = 1:M
    fprintf(1,'Input the function F_(%d) in terms of t and y1 ... y%d\n',...
        I,M);
    fprintf(1,'For example: ''y1-t^2+1'' \n');
    kk = input(' ');
    ss{I} = kk;
end
%(3)
V = 1:M+1; %replacing V with other input vectors here
c = num2cell(V);
Y = zeros(1,M);
if M==1
    ysym = sym('y1');
else
    ysym = sym('y%d',[1,M]);
end
syms t
for I = 1:M
    z = evalin(symengine, ss{I});
    f = symfun(z,[t,ysym]);
    Y(I)=f(c{:});
end
%(4)
Y