How can i use symbolic variables which were created as a vector?

Hi,

x_opr=[1 2 3 4 5 6 7 8 9];
syms sv
sv=sym('x',[1 numel(x_opr)])

Output of this command is:

sv =
 [ x1, x2, x3, x4, x5, x6, x7, x8, x9]

x1 to x9 will be used in some calculations, but i have an error message: Undefined function or variable 'x2'.

It seems that i have to define x1 to x9 as symbolic again, but i have already wrote them as a vector. Where is my wrong?

Thanks,

Answer 1

[KSSV]

What you have shown will not work and it is meaning less. You have to use:

x = [1 2 3 4 5 6 7 8 9];

Where veer you have x1, x2, ..x9 etc....use x(1), x(2), .....x(9). Read about matrix indexing in MATLAB.