(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Evaluate the following determinant by expressing the matrix in upper triangular form.

2. Relevant equations

row operations.

3. The attempt at a solution

http://yfrog.com/jnscan0001ugj

http://img707.imageshack.us/img707/6379/scan0001ug.jpg

I want to know what I did wrong there cause I cant figure it out

the calculator shows a different answer.

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# Linear algebra: Determinant

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