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Homework Statement
Evaluate the following determinant by expressing the matrix in upper triangular form.
Homework Equations
row operations.
The Attempt at a Solution
http://yfrog.com/jnscan0001ugj
http://img707.imageshack.us/img707/6379/scan0001ug.jpg
[PLAIN]http://img707.imageshack.us/img707/6379/scan0001ug.jpg
I want to know what I did wrong there cause I can't figure it out
the calculator shows a different answer.
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