00:01
Hello, so here we're asked for what's constants b and c is the matrix here, 01b, negative 1 ,0c, negative b, negative c, 0.
00:15
What constants of b and c is this matrix going to be invertible? so we can just try to make this to the identity by first switching rows 2 and 3, and then doing negative 1 times the first row, and then negative b times the last row.
00:35
And then we add, and then we can get the identity, which we end up with here, 1 ,0, negative c, 0, b, 0, 0 .0...