Class 12 Math Algebra Determinants
If are non zero real numbers, then the inverse of matrix is
(a)
(b)
(c)
(d)
Correct answer: (a) 
Solution: 

Here,
 
Since, are non-zero real numbers.
So, exists.

and










Hence, the co-factor matrix is 







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Similar topics
determinants
matrices
binomial theorem
complex numbers and quadratic equations
sequences and series
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Connecting you to a tutor in 60 seconds.
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determinants
matrices
binomial theorem
complex numbers and quadratic equations
sequences and series