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HW10P1 (14 points) For the following system of equations 2x1 x30 3x1 -x2 +4x3--8 4x 2 2x5 a. b. c. d. e. (2 pts) write the linear system in the format, A X b. (2 pts) Find the determinant of the matrix A by using an expansion along row 1 (2 pts) Find the determinant of the matrix A by using an expansion along column 2. (2 pts) Find the determinant of the matrix A by using an expansion along row 3 (2 pts) Interchange column 1 with column 2 of matrix A, and find the determinant of ix with the expansio new determinant with that of matrix A obtained in b, c, and d. Show that your result agrees with the determinant property of interchanging rows/columns (3 pts) Perform the row operation 2R1 +R3 matrix by expansion on column 1. Compare the new determinant with that of matrix A obtained in b, c, and d. Show that your result agrees with the determinant property of adding constant multiple of a row/column to another row/column (1 pt) Based on your results of parts b, c, and d, explain why matrix A is invertible. Do NOT determine the inverse f. R3 and find the determinant of the new g.

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