Math 1050-003: Quiz 8
April 26, 2016
Name:
Answer the questions in the space provided. SHOW ALL WORK and put your
final answer in the space provided. You may use your notes, textbook, homework,
and other students, but the use of any electronic device is not permitted.
1. (4 points) Find the product of:
.
/-‘ON-9h.
-(2-3e?
-3(’_-
‘
N
7-’
(—9
(1)
‘—1
2. (4 points) Find the determinant of the matrix: (0
\—2
Wa
-
2 1
21
1 0
\.
-\
-NM>-’
i
-i’Q<-N
+2 •- 2
—
(2)
.12
3. (4 points) Find the inverse of:
(k
—1
1
\-:2--
-‘
A’= aQ1r(p
L
2
(:i
=
(3)
1
(—22+ .‘.
-\
April 26, 2016
Page 2 of 2
Math 1050-003
4. (2 points) Write the following system of three linear equations in three variables as a matrix
equation:
7+2y+z=3
13
z+3y-2=5
0
\
)
5. (6 points) Solve for x,y, and z if
7—3
(5
\2
—2
3
1
7\
•-•3\
/ 1 \
7—3
—2
—3\
s)
\2
1
zj
\3/
5)(\y)=(_2)and(5
1
1/
1
7 2
1
=(_5_3
\1
1
1 \
o)
—1/
j: A
/L
i-s
/
\
-
-z
-S(-3&)
1
/ )
(5)