3 and 4 .Determinants and Matrices
easy

જો $A \ne O$ અને $B \ne O$ એ $n × n$ કક્ષાવાળા શ્રેણિક હોય અને $AB = O $ તો . . .

A

$Det(A) = 0$ અથવા $Det(B) = 0$

B

$Det(A) = 0$ અને $Det(B) = 0$

C

$Det(A) = $ $Det(B) \ne 0$

D

${A^{ - 1}} = {B^{ - 1}}$

Solution

(a) $A \ne O$ and $B \ne O$ $\therefore \,\,AB = 0$

Hence, $Det$ $(A) = 0$ or $Det$ $(B) = 0$.

Standard 12
Mathematics

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