- Home
- Standard 12
- Mathematics
3 and 4 .Determinants and Matrices
easy
જો $A = \left| {\,\begin{array}{*{20}{c}}5&6&3\\{ - 4}&3&2\\{ - 4}&{ - 7}&3\end{array}\,} \right|\,,$ તો બીજી હારના ઘટકોના સહઅવયવ મેળવો.
A
$39,\, - 3,\,11$
B
$ - 39,\,3,\,11$
C
$ - 39,\,27,\,11$
D
$ - 39,\, - 3,\,11$
Solution
(c) ${C_{21}} = {( – 1)^{2 + 1}}(18 + 21) = – 39$
${C_{22}} = {( – 1)^{2 + 2}}(15 + 12) = 27$
${C_{23}} = {( – 1)^{2 + 3}}( – 35 + 24) = 11$.
Standard 12
Mathematics
Similar Questions
hard
easy