given matrix A =

1st row 2 1 0

2nd row 3 1 2

3rd row 1 0 5

a)write matrix 3A

plse chk my answer;

1st row 6 3 0

2nd row 9 3 6

3rd row 3 0 15

b)find the det A by expanding by row 1.

my ans:-3

plse check for me..

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- Dec 19th 2008, 04:56 PMFazmatrix question 2
given matrix A =

1st row 2 1 0

2nd row 3 1 2

3rd row 1 0 5

a)write matrix 3A

plse chk my answer;

1st row 6 3 0

2nd row 9 3 6

3rd row 3 0 15

b)find the det A by expanding by row 1.

my ans:-3

plse check for me.. - Dec 19th 2008, 05:12 PMChris L T521