Skip to the 4 ways: 6:08

Diagonal matrices CAN have zeros along the main diagonal! I kind of misspoke at 0:35. A matrix is diagonal when all entries NOT on the main diagonal are zero, but that doesn't exclude the main diagonal entries from being equal to zero.

Link to example problem:    • Diagonalizing 3x3 Matrix  Full Proce...  

diagon alleyzation