Define a 100 * 100 symbolic matrix whose elements are the function of a symbolic variable t

Hi guys,

I want to define a symbolic matrix whose size is 100 * 100. All of the elements inside the matrix are all functions of time t. Also, I want to make the variable t a symbolic variable.

So how to define this matrix and write the codes in Matlab ?

Thanks so much!

Cheers

[KSSV]

How your elements are defined? How they depend on t? Read this: https://in.mathworks.com/help/symbolic/create-symbolic-matrices.html

[Tony Cheng]

Dear KSSV,

Thanks so much for your anser!

Actually, I want to creat a 100*100 symbolic matrix, inside which all elements are the functions of the time variable t.

So I can input all of the 10000 elements in this way: A_1(t) , A_2(t), A_3(t) , ..., A_10000(t). However, u can see this process is quite time-comsuming.

Thus I want to know are there any codes in matlab that can directly this matrix

A(t) = [ A_1_1(t) , ..., A_1_100(t) ;

...

...

A_100_1(t) , ..., A_100_100(t) ]

Thanks so much!

[Walter Roberson]

This cannot be done in MATLAB. Arrays of symbolic functions are converted into a single symbolic function returning an array.

[Stephan]

I agree, all you can do is find some workaround like shown in this example:

https://de.mathworks.com/matlabcentral/answers/455237-why-the-seond-arugment-in-the-command-jacobian-is-not-a-vector-of-variables

[Tony Cheng]

Hi Walter and Stephan,

Thanks very very much for your answers! boost my efficiency and release more time for other jobs! I will use the workaround as Stephan have shown to me!

Again, THANK BOTH OF YOU VERY MUCH!