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CBSE Class 12 · 2011 · MatricesVery Short Answer

For a

2 \times 2

matrix

A = [a_{ij}]

whose elements are given by

a_{ij} = \frac{i}{j}

, write the value of

a_{12}

.

Answer: $a_{12} = \frac{1}{2}$

Solution

Substitute the row index

i = 1

and column index

j = 2

into the rule

a_{ij} = \frac{i}{j}

:

a_{12} = \frac{1}{2} .

a_{12} = \frac{1}{2}

CBSE Class 12 Board · 2011 · Subjective

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