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10 Nov 2019
Problem 3 Let2 (a -1) (a -4) 1 i) Use row operations to put A into upper triangular form using only type I and III operations lupper triangular means that A(i,j)- 0 whenever i > j. ii) Use i) to find the values of a for which the matrix A is singular. ii) Assuming a to be a value different from those listed in ii), find an explicit expression for A- in terms of the indeterminate a, by computing rref(lAI]).
Problem 3 Let2 (a -1) (a -4) 1 i) Use row operations to put A into upper triangular form using only type I and III operations lupper triangular means that A(i,j)- 0 whenever i > j. ii) Use i) to find the values of a for which the matrix A is singular. ii) Assuming a to be a value different from those listed in ii), find an explicit expression for A- in terms of the indeterminate a, by computing rref(lAI]).
Hubert KochLv2
4 Apr 2019