WorksheetsDeterminants2
Total questions: 8
Worksheet time: 51mins
Name
Class
Date
1.
a)
0
b)
1
c)
-1
d)
2
2.
what are the values of
A13, A21 and A23 ?a)
90, -4, 7
b)
90, 46, 7
c)
30. -4, 13
d)
30, 4, 13
3.
a)
b)
c)
d)
4.
Find the area of the triangle whose vertices are (3, 8), (-4, 2) and (5, 1)?
a)
-
−261b)
251
c)
261
d)
−251
5.
If A is a matrix of order 3×3, then number of minors in the determinant of A Are .........
6.
Solution of the the following system of linear equations x−y+2z=1, 2y−3z=1, 3x−2y+4z=2 is given by
a)
x=0, y=5, z=3
b)
x=1, y=2, z=3
c)
x=0, y=3, z=5
d)
x=3, y=0, z=5
7.
Calculate the value of the following: A3−6A2+5A ?
a)
−11I
b)
11I
c)
10I
d)
−10I
8.
If A and B are two square matrices of same order, then (AB)−1is equal to ?
a)
B−1A−1
b)
A−1B−1
c)
AB−1
d)
A−1B
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