The inverse of the matrix \[\left[ {\begin{array}{*{20}{c}} 2&3&4 \\ 4&3&1 \\ 1&2&4 \end{array}} \right]\] is
A. \[\left[ {\begin{array}{*{20}{c}} {10}&{ - 4}&{ - 9} \\ { - 15}&4&{14} \\ 5&{ - 1}&{ - 6} \end{array}} \right]\]
B. \[\left[ {\begin{array}{*{20}{c}} { - 10}&4&9 \\ {15}&{ - 4}&{ - 14} \\ { - 5}&1&6 \end{array}} \right]\]
C. \[\left[ {\begin{array}{*{20}{c}} 2&{ - \frac{4}{5}}&{ - \frac{9}{5}} \\ { - 3}&{\frac{4}{5}}&{\frac{{14}}{5}} \\ 1&{ - \frac{1}{5}}&{ - \frac{6}{5}} \end{array}} \right]\]
D. \[\left[ {\begin{array}{*{20}{c}} { - 2}&{\frac{4}{5}}&{\frac{9}{5}} \\ 3&{ - \frac{4}{5}}&{ - \frac{{14}}{5}} \\ { - 1}&{\frac{1}{5}}&{\frac{6}{5}} \end{array}} \right]\]
Answer: Option D
This Question Belongs to Engineering Maths >> Linear Algebra
A. 3, 3 + 5j, 6 - j
B. -6 + 5j, 3 + j, 3 - j
C. 3 + j, 3 - j, 5 + j
D. 3, -1 + 3j, -1 - 3j
A. 1024 and -1024
B. 1024√2 and -1024√2
C. 4√2 and -4√2
D. 512√2 and -512√2
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