Upper and lower triangular matrices — Krista King Math | Online math help

find the lower triangular matrix that satisfies 8 a3 65805

Prove that the product of two lower-triangular matrices is lower-triangular. Prove that the determinant of a lower-triangular or upper-triangular matrix is equal to the product of its diagonal elements. Prove that the inverse of a lower-triangular matrix, if it exists, is lower-triangular. | Numerade