What is the determinant of a triangular matrix?. Hint: Expand on column 1. Row Operations. Multiply a row by a non zero constant.What happens to the determinant?. Row Operations: Switch two rows. Row Operations: Add a multiple of one row to another. Hint: Expand on Row 1 . Theorem 3. Multiplication of a row by a constant multiplies the determinant by that constant. Switching two rows changes the sign of the determinant. Replacing one row by that row plus a multiple of another row has no ef32642
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