Answers
option:3 is the answer.
Let the matrix be A.
mod A=-(5k+12)-(15-8)+(-9-2k)
=-7k-28=0(where k=-4)
W. K. T. matrix has an inverse only when the detA is non-singular.
about 8 years ago
Jaysurya
since it has inverse it is non singular.hence its modulus is not equal to zero.
almost 10 years ago
Naveen
Since the matrix has inverse |A| is not equal to zero. The value of |A| is -7k-28 on solving this, we have k is not = -4
over 10 years ago
Kathiravan...
add -1 and 3 ans is 2 add 1 nd 4 ans is 5 so to not make the ans 0 k must not be -4 since 1 -4=0 so ans is c
over 11 years ago
Ansu-thoma...
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