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The process for importing matrices from a text file in MATLAB can be done in the following steps:

1. Open the text file in MATLAB using the "fopen" function
2. Read the content of the file using the "fscanf" function
3. Convert the string data to numeric data using the "str2double" function
4. Reshape the resulting vector into a matrix using the "reshape" function

Here is an example code snippet that demonstrates the process:

% Open the text file
fid = fopen('matrix.txt');

% Read the content of the file
data = fscanf(fid, '%f');

% Convert the string data to numeric data
data = str2double(data);

% Reshape the resulting vector into a matrix
matrix = reshape(data, 3, 3);

% Close the file
fclose(fid);

In this example, the text file contains a 3x3 matrix, which is read into MATLAB as a vector of 9 elements. The "reshape" function is then used to convert the vector into a matrix with the desired dimensions.