WorksheetsChapter 7 Matrix Algebra
Total questions: 8
Worksheet time: 3mins
Name
Class
Date
1.
The following notations will be used while applying ERO
a)
Interchange of row.
b)
Division of row of the matrix with scalar k.
c)
Addition of ith row that is multiplied by the scalar k to the jth row.
d)
Multiplication of ith row of the matrix with scalar k.
2.
Elementary Row Operations is important method to
a)
find the inverse of a matrix
b)
find the determinant of matrix
c)
solve the system of linear equations
d)
find the minor and cofactor of the matrix
3.
In ERO, we apply addition operation because we want to make the element as
a)
0
b)
1
4.
Which of the following is Echelon matrix?
a)
b)
c)
5.
What is the rank of the following matrix
a)
1
b)
2
c)
3
6.
Calculate the minor of a31?
a)
-1
b)
0
c)
1
7.
From the given matrix A, find the cofactor c32?
a)
3
b)
-3
c)
12
d)
-12
8.
By using ERO, calculate the inverse of the following matrix?
a)
b)
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