UW Common Math 308 Section 5.1.pdf - UW Common Math 308...

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3/8/2018 UW Common Math 308 Section 5.1 1/9 Current Score : 41 / 41 Due : Thursday, March 1 2018 11:00 PM PST 1. 2/2 points | Previous Answers HoltLinAlg2 5.1.004. Find for the given matrix A. M 23 = M 31 = 2. 2/2 points | Previous Answers HoltLinAlg2 5.1.008. Find C 13 and C 22 for the given matrix A . C 13 = 76 C 22 = 36 UW Common Math 308 Section 5.1 (Homework) ANASTASIA MARIE STEVENS Math 308, section O, Winter 2018 Instructor: ANDREA HEALD WebAssign The due date for this assignment is past. Your work can be viewed below, but no changes can be made. Important! Before you view the answer key, decide whether or not you plan to request an extension. Your Instructor may not grant you an extension if you have viewed the answer key. Automatic extensions are not granted if you have viewed the answer key. Request Extension View Key M 23 and M 31 A = 0 4 1 0 3 2 2 0 0 4 2 0 5 6 2 6 9 4 0 6 −4 −7 7 8 4
3/8/2018 UW Common Math 308 Section 5.1 3. 4/4 points | Previous Answers HoltLinAlg2 5.1.014. Find the determinant for the given matrix A in two ways, by using cofactor expansion along the indicated row or column.
2/9 4. 2/2 points | Previous Answers HoltLinAlg2 5.1.030. Find all real values of a such that the given matrix is not invertible. (HINT: Think determinants, not row operations. Enter your answers as a comma­separated list. If an answer does not exist, enter DNE.) 5. 3/3 points | Previous Answers HoltLinAlg2 5.1.034. Find all real values of a such that the given matrix is not invertible. (HINT: Think determinants, not row operations. Enter your answers as a comma­separated list. If an answer does not exist, enter DNE.)
(b) along the third column det( A ) = 3 Use the determinant to decide if is invertible.

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