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JEE-ADVANCED-2014
PAPER 1
Multiple correct answers - Select all that apply
Question
Let M be a 2 × 2 symmetric matrix with integer entries. Then M is invertible if
Select ALL correct options:
A
the first column of M is the transpose of the second row of M
B
the second row of M is the transpose of first column of M
C
M is a diagonal matrix with nonzero entries in the main diagonal
D
the product of entries in the main diagonal of M is not the square of an integer
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
⚠ Partially correct. Some answers are missing.
Solution
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JEE Advance
Mathematics
Easy
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