a=matrix(0.3,0.5],[0.8,1.3],[0.7,0.9

b=matrix(4,1,2,3],[2,3,2,2)

[2.20000000000000 1.80000000000000 1.60000000000000 1.90000000000000] [5.80000000000000 4.70000000000000 4.20000000000000 5.00000000000000] [4.60000000000000 3.40000000000000 3.20000000000000 3.90000000000000] 

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