how to combine to matrix with the same rows and different columns
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I have matrix A with n rows and three columns, matrix B with n rows and one column. For instance, matrix A and B could be as follows:
A= [1 4
3 6
4 7
1 3
5 2
7 9]
B=[1
2
2
3
2
5]
As you see, matrix A and B have the same number of rows. I would like to produce matrix C from matrix A, but only rows which are “2” in matrix B.
C=[3 6
4 7
5 2]
It would be appreciated if you could give me some ideas for solving this problem.
Thanks
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