mpower doesn't work with symbolic matrix

I'm trying to create a symbolic experession of a matrix A raised to the power n, using a symbolic matrix variable (as introduced in R2021a).

However, I always get the following error:

% Create a symbolic 2x2 matrix
syms A 2 matrix            

% Create a symbolic integer
syms n                              
assume(n, {'integer', 'positive'}) 

% Perform A^n
A^n

Error using ^
Invalid argument at position 2. Value must be integer.

MATLAB says n isn't an integer, even though it is defined to be one. What am I doing wrong?

The same thing also happens when using the explicit syntax (mpower(A, n)).

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Related documentation: (can't find anything about this in there)

• https://de.mathworks.com/help/symbolic/mpower.html
• https://de.mathworks.com/help/symbolic/syms.html#d123e299076

Answer 1

[KSSV]

syms A 2 matrix
syms n
assume(n, {'integer', 'positive'})
A.^n

ans = 

[fi]

That's not mpower. A.^2 performs the operation element-wise (see power, .^).

What I want is matrix power as in A^2 = A*A (see mpower, ^).

Answer 2

[Torsten]

A = sym('a%d%d', [2 2]);
A^2

ans =