how to create a variable matrix

I want to create a 4x3 matrix with two variables and cosine function

Answer 1

[Sameer]

Hi @UJWALA DONGARE

To create a symbolic matrix with variables and functions like cosine, use the Symbolic Math Toolbox. Symbolic variables can be defined using the "syms" function, and then assembled into a matrix as needed.

For example, to create a 4x3 matrix with symbolic variables "x" and "y", and expressions involving cosine:

syms x y
A = [x,        y,        cos(x);
    cos(y),   x + y,    x*y;
    x^2,      y^2,      cos(x + y);
    cos(x*y), x - y,    cos(x - y)]

A = 

This creates a 4-by-3 symbolic matrix containing a mix of variables and cosine expressions.

For more details please refer to the following MathWorks documentation:

www.mathworks.com/help/symbolic/syms.html

www.mathworks.com/help/symbolic/sym.html

Hope this helps!