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Find a matrix A ,ifA+[2 3 -1 4]=[3 -6...

Find a matrix `A ,ifA+[2 3 -1 4]=[3 -6 -3 8]`

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`A+[[2,3],[-1,4]]=[[3,-6],[-3,8]]`

`rArr A=[[3,-6],[-3,8]]-[[2,3],[-1,4]]`

`rArr A= [[3-2,-6-3],[-3-(-1),8-4]]`

`rArr A=[[1,-9],[-2,4]]`
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