In the matrix , write: (i) The order of the matrix (ii) The number of elements, (iii) Write the elements a 13 , a 21 , a 33 , a 24 , a 23

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Solution

(i)

The given matrix is, A=[ 2 5 19 −7 35 −2 5 2 12 3 1 −5 17 ]

The matrix A has 3 rows and 4 columns. Thus, the order of the matrix is 3×4 .

(ii)

Number of elements in a matrix = Number of Rows X Number of Columns

So, the order of the matrix is 3×4 , therefore the number of elements is 3×4=12 .

(iii)

The elements are given as,

a 13 =19

a 21 =35

a 33 =−5

a 24 =12

a 23 = 5 2

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