Algebra(check pt 3)
posted by erin .
1)The dimensions of ST.
S[7/12 1/9]
[1/3 1/9]
T[4 5 2]
[8 1 3]
answer=2x3
2)The pair of matrices that are inverses.
P[3 1] Q[4 4] R[0 1/4]
[4 0] [12 21] [1 3/4]
S[7/12 1/9] T[4 5 2] U[9 6 4]
[1/3 1/9] [8 1 3] [5 2 3]
V[3 1]
[0 2]
[4 5]
answer=S and R
3)Find the value of [15 4]
[6 2]
answer=6
4)Evaluate:[1 4 1]
[0 3 5]
answer=10
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