MATLAB Answers

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

1 view (last 30 days)
Volkan Yangin
Volkan Yangin on 12 Jan 2021
Answered: KSSV on 12 Jan 2021
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?

Answers (1)

KSSV on 12 Jan 2021
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.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by