[R] Matrix multiplication in R is inaccurate!!

[Vikas Rawal]

If you multiply a matrix by its inverse you should get an identity matrix. In R, you get an answer that is accurate up to about 16 decimal points? Why can't one get a perfect answer?

See for example: 

c(5,3)->x1
c(3,2)->x2
cbind(x1,x2)->x
solve(x)->y
x%*%y

Vikas Rawal

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