0 -1 7 by using cofactor expansion across the second row. -2 0 -1 5409 -014h 1230 (b) Compute the determinant of the matrix from part (a) by using its echelon form. () 2. (a) Compute det

Find the determinant of the matrix in Exercise 16 using the method of expansion by cofactors. Use a the third row and b the first column. 16. [342631478]

Compute the determinants in Exercises 1-6 using cofactor expansion along the first row and along the first column. 3.

The determinant of a 22 matrix involves two products. The determinant of a 33 matrix involves six triple products. Show that the determinant of a 44 matrix involves 24 quadruple products.