DeterminantHard

Question

Identify the correct statement(s)

Options

A.If system of n simultaneous linear equations has a unique solution, then coefficient matrix is singular
B.If system of n simultaneous linear equations has a unique solution, then coefficient matrix is non singular
C.If A-1 exists, (adj A)-1 may or may not exist
D.F(x) = , then F(x) . F(y) = F(x - y)

Solution

For unique solution co-efficient matrix should be non-singular.
For (adj A)-1 to exist matrix A should be non singular.

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