Linear Algebra 3 1 3 9 3 Has 4 Parts In Total 1 (22.38 KiB) Viewed 53 times
Linear Algebra 3 1 3 9 3 Has 4 Parts In Total 2 (23.35 KiB) Viewed 53 times
Homework: Section 3.1 A = Compute the determinant using a cofactor expansion down the first column. 2 -5 2 9 1 3 0 4 -2 a11 C11 (2)det Question 3, 3.1.7 Part 2 of 4 Determine the value of the first term in the cofactor expansion. Substitute the value for a₁₁ and complete the matrix for C₁₁ below. 1 3 4 -2 a21 C₂1 = -( C det HW Score: 68.29%, 6.15 of 9 points Points: 0.31 of 1 Determine the value of the second term in the cofactor expansion. Substitute the value for a21 and complete the matrix for C₂1 below. Save
Homework: Section 3.1 4 The expansion of a 3x3 determinant can be remembered by this device. Write a second copy of the first two columns to the right of the matrix, and compute the determinant by multiplying entries on six diagonals. Add the downward diagonal products and subtract the upward products. Use this method to compute the following determinant. 1 -1 2 4 Question 9, 3.1.17 -2 4 HW Score: 68.29%, 6.15 of 9 points O Points: 0 of 1 C Save [11 12 13] ²11 ²12 221 222 223 221 ²22 231 232 233 231 232 +
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