UW Common Math 308 Section 5.1 - LIKAI CHEN Math 308...

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Current Score :41 / 41Due : Thursday, May 21 2015 11:00 PM PDT1.2/2 points | Previous AnswersHoltLinAlg1 5.1.004.Find for the given matrix M23= 0-10010422[0, -1, 0; 0, 1, 0; 4, 2, 2]M31= -1605-50252[-1, 6, 0; 5, -5, 0; 2, 5, 2]M23and M31A= 016035500150425 2A.
UW Common Math 308 Section 5.1 (Homework)LIKAI CHENMath 308, section I, Spring 2015Instructor: Alexander YoungWebAssignThe 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 maynotgrant you an extension if you have viewed the answer key. Automatic extensions are not granted if you have viewed theanswer key.Request Extension
2.2/2 points | Previous AnswersHoltLinAlg1 5.1.008.Find C13and C22for the given matrix A.
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3.4/4 points | Previous AnswersHoltLinAlg1 5.1.014.Find the determinant for the given matrix Ain two ways, by using cofactor expansion along the indicatedrow or column.= 6180160 15 60 10 160
8(b) along the third column det(A) = 8 Use the determinant to decide if is invertible.Since Ais isinvertible, and hence Tis invertible.(x) = A(xdet(A) 0,det(A) = a11C11+ a12C12+ a13C13+ a148isSolution or Explanation
A= 6180160 15 60 10 160T(x) = A(xdet(A) 0,det(A) = a11C11+ a12C12+ a13C13+ a14)C14
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4.2/2 points | Previous AnswersHoltLinAlg1 5.1.030.Find all real values of asuch that the given matrix is not invertible. (HINT: Think determinants, not rowoperations. Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)

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