M1.6. More Matrix Stuff
A matrix can be constructed from two or more vectors. If we wish to create a matrix v which consists of two columns, the first column containing the vector x (in column form) and the second column containing the vector z (in column form), we can use the following (where x and z are previously generated row vectors):
» v = [x',z'] v = 1 5 3 10 5 15 7 20 9 25 11 30
If we wished to look at the first column of v, we could use (where : indicates all rows, while the 1 indicates the first column)
» v(:,1) ans = 1 3 5 7 9 11
If we wished to look at the second column of v, we could use
» v(:,2) ans = 5 10 15 20 25 30
And we can construct the same plot as before by using the following plot command ('--' gives a dashed line): ...
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