Solution Found!
Combine the methods of row reduction and
Chapter 3, Problem 13E(choose chapter or problem)
QUESTION:
Problem 13E
Combine the methods of row reduction and cofactor expansion to compute the determinants in Exercises 11–14.
Questions & Answers
QUESTION:
Problem 13E
Combine the methods of row reduction and cofactor expansion to compute the determinants in Exercises 11–14.
ANSWER:
Solution 13E
Use the combination of methods of row reduction and cofactor expansion to find the value of the determinant,
.
It is suggested to use the fourth column for the cofactor expansion.
Use 1 in the fourth column as a pivot. Use a row replacement to create zeros in the fourth column by the help of the row operations.