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Q1 of 124 Page 154

If then write

i. the number of rows in A,


ii. the number of columns in A,


iii. the order of the matrix A,


iv. the number of all entries in A,


v. the elements a23, a31, a14, a33, a22 of A.


(i) Number of rows = 3


(ii) Number of columns = 4


(iii) Order of matrix = Number of rows x Number of columns = (3 x 4)


(iv) Number of entries = (Number of rows) x (Number of columns)


= 3 x 4


= 12


(V)







More from this chapter

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2

Write the order of each of the following matrices:

i.


ii.


iii.


iv. D = [8 -3]


v.


vi, F = [6]


3

If a matrix has 18 elements, what are the possible orders it can have?

4

Find all possible orders of matrices having 7 elements.

5

Construct a 3 × 2 matrix whose elements are given by aij = (2i – j).

Questions · 124
5. Matrices
1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 A 1 B 1 C 1 D 1 E 2 A 2 B 3 A 3 B 3 C 4 5 16 A 6 7 A 7 B 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 1 2 3 4 5 6 7 8 9 10 11 12 13 A 13 B 13 13 D 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
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