1) In matrix product HF, the value in the fourth row of the first column is
2) The value in the first column of the first row of matrix product EE (E multiplied by itself) is
3)
Suppose you rotate triangle ABC counterclockwise 90º. If ABC has vertices A (-2, 1), B (-1, 4), and C (2, 2), vertex A' is (-1, ?).
+23254 1) To get the value in the fourth row of the first column of your answer, multiply the fourth row of H times the first column of F. -3
2) To get the value in the first column of the first row of your answer, multiply the first row of E times the first column of E. 14
3) Use this matrix multiplication: | cos 90 -sin 90 | | -2 | = | -1 |
| sin 90 cos 90 | | 1 | | 2 |
+23254 1) To get the value in the fourth row of the first column of your answer, multiply the fourth row of H times the first column of F. -3
2) To get the value in the first column of the first row of your answer, multiply the first row of E times the first column of E. 14
3) Use this matrix multiplication: | cos 90 -sin 90 | | -2 | = | -1 |
| sin 90 cos 90 | | 1 | | 2 |
