3
votes
2answers
129 views

Textbook determinant convention

My text book is called "Linear Algebra and its applications" by David C. Lay. I am just wondering why the textbook uses the absolute value symbol when it wants us to compute determinants. For ...
2
votes
1answer
253 views

Linear Algebra: A matrix vs a determinant

I would like to clarify something in regards to finding a determinant of a matrix. For example say I have this problem where I have to evaluate the determinant: Is the determinant notation simply a ...