Math 205a Worksheet - 2008
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1Math 205A
Quiz 05 page 1
February 15, 2008
NAME
3 6 0 4
4 1 0 7
?
?
h
?
6 s 2 t
1 7 3 s
? 28
?
?
1. Let A =
and B =
. Let C = AB and suppose C =
.
1 5 3 8
2 2 9 t
23
?
? 29
2 u 1 0
1 4 1 1
?
? 24
?
1A. Find h.
1B. Find u.
1C. Find s.
1D. Find t.
7 4
2. Let D =
.
5 3
1
2A. Find D
.
x
18
1
2B. Use D
to solve D
=
.
y
14
3. Suppose that E, Q, P and G all belong to M
.
3×3
1
1
Under what conditions does (GQP E)
exist, and what is (GQP E)
in this case?
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