00:02
All right, we have three matrices, a, b, and c, and we are asked to find a plus b minus c.
00:10
And so since we have three matrices here, we're going to group the first two together.
00:14
And first we will find a plus b, get the results of that matrix, and then we will subtract c.
00:20
So for a to add matrices, we will take the entry in the first row, first column, in a, and add that to the entry in the first row in the first column in b.
00:30
So that's 0 .25.
00:34
And then we have the first row, second column in a.
00:38
So minus 1, sorry, 0 plus 0 .25...