Mathematics 205: Linear Algebra Quiz #12 Worksheet - David Haines, Bates College, 2004
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1Name__________________________________________
Mathematics 205: Linear Algebra
Fall Semester 2004
David Haines
Quiz #12
October 4
1
1
1
4
0
0
1
4
2
−
Suppose A =
0
1
1
, B =
0
1
0
, and C =
0
3
2
.
0
0
1
0
0
1
1
1
4
Determine which of A, B, and C are invertible. Use as few calculations as possible.
Justify your answers.
A
B
C
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