00:01
This problem says an example of a 2x3 matrix would be, and we're given four choices, a through d.
00:07
And to remember how we deal with dimensions for a matrix, we are always given the dimensions, in this case 2x3, as the number of rows by the number of columns, or row by column.
00:21
So that means we're looking for two rows and three columns for the matrix we want to match up with.
00:28
And looking at our first multiple choice option a, we have 1, 2, 3 rows and 1, 2, 3 columns, so that would be 3 by 3, and that's not what we're looking for.
00:38
For b, we have 1, 2, 3 rows by 1, 2 columns, that's 3 by 2, and that's the reverse of what we want, so b is incorrect...