Math 11 Chapter 3
Matrices and Determinants
Test 2


Math Class 11
1.    Inverse of every matrix exist.


2. The matrix is in echelon form.


3. = 0


4. A square matrix A= [ aij] is called an upper triangular matrix. If a ∀iji ! j.


5. If A = then :




Math Class 11
6. AA-1 = A-1A =




Math Class 11
7.    If n is positive integer then A+A+A----n term:




Math Class 11
8. Minor of an element aij is denoted by:




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