00:01
Okay, so let me call m the matrix in the statement of our exercise.
00:06
Well, let's notice that m is a matrix of dimension 3 times 7.
00:13
So is a 3 times 7 matrix.
00:20
Okay, perfect.
00:22
Now, before we go on, let's keep in mind, so this is a remark, that the dimension of the column space, so dimension of the column space is equal to the dimension of the row space.
00:39
So we just need to find the dimension of the column space, and after that we are going to find the dimension of the new space by using the fact that m is a 3 times 7 matrix.
00:53
But we are going to see this later.
00:55
Okay, so what is the dimension of the column space? well the dimension of the column space is the maximum one that is three so dimension of column space okay column space is equal to three indeed the vectors one zero zero one zero and one five one well these three vectors are linearly independent.
01:37
So are linearly independent.
01:40
That's why the dimension is the maximum one which is 3...