Easy linear algebra question
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Easy linear algebra question

[From: ] [author: ] [Date: 11-10-13] [Hit: ]
......
6 -2
-3 k

this matrix is only invertible if and only if k doesn't = ?

im asking a lot of questions today, but I am oh so lost
please help thanks :)

-
Take the determinant and set it to 0

6k - (-2)(-3) = 6k - 6 = 6(k -1) = 0

The matrix is invertible if and only if k is NOT 1

Yin
1
keywords: Easy,algebra,linear,question,Easy linear algebra question
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