how to calculate the maximum of a matrix in matlab

To calculate the maximum element in a matrix in MATLAB, you can use the built-in max function. There are two forms of this function: one that operates on a single matrix, and one that operates on multiple matrices.

To calculate the maximum element of a single matrix, you can simply call the max function with no additional arguments:

main.m
A = [1 2 3; 4 5 6; 7 8 9];
max_element = max(A);
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The variable max_element will contain the value 9, which is the maximum element in the matrix A.

If you have multiple matrices and want to find the maximum element across all of them, you can pass them to the max function as separate arguments:

main.m
A = [1 2 3; 4 5 6; 7 8 9];
B = [9 8 7; 6 5 4; 3 2 1];
max_element = max(A, B);
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In this case, the max_element variable will contain a matrix with the same size as A and B, where each element is the maximum value between the corresponding elements in the two input matrices.

Note that the max function operates element-wise on matrices, so it can also be used to find the maximum value at each position in a matrix or between multiple matrices of the same size.