24
Answers
Answers
Adjoint of any 2x2 matrix is by interchanging a11 and a22. Then the sign must be changed for a12 and a21.
so, if A = (-1 2
1 -4)
Then adjoint of A =( -4 -2
-1 -1).
about 8 years ago
Shakthi
first interchange the diagonal value of -4 &-1
next other diagonal side sign should be change.
almost 9 years ago
Abirami
there is a short way to solve this kind of 2*2 matrx.
first interchange the numbers of the leading diagonal element.
then change the sign of the the other two element.
MAKE SURE THAT THIS IS APPLICABLE ONLY FOR 2*2 MATRIX.
almost 9 years ago
Raghav
the answer is option 3 . procedure to solve this is inter change -1&-4 and change the symbol for 1&2
about 9 years ago
Aravind Vi...
first interchange a11and a22 in the given matrix.then put opposite signs to a12 and a21 in the matrix
about 10 years ago
Vignesh
adj A = A transpose co factor.
therefore A transpose is equal to { -1 1
2 -4}
cofactor is -4 -2
-1 -1
over 10 years ago
Ragland
here interchange the positions of -4 and -1 and change the signs of 2 and 1 thts the answer my dear frnd
about 11 years ago
Deepshika
ans is option 3. it's simple just exchange the values in the main diagonal and put the opposite sign for the other diagonal.
about 11 years ago
Ansu Thoma...
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almost 9 years - S a amulya
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about 10 years - Deekshita reddy
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