create a column vector 𝑡 containing the values in the first column of the matrix a in matlab

To create a column vector containing the values in the first column of matrix a in Matlab, you can use the colon operator : to select all rows in the first column of a. Here's the code:

main.m
t = a(:,1);
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The : specifies that we want to select all rows in the first column of a, and the 1 specifies that we want to select the first column. By using the colon operator in this way, we create a new vector t that contains all the values in the first column of a.