| http://www.w3.org/ns/prov#value | - X=: x ^/ i.3 NB. form Design matrix X=: (x^0) ,. (x^1) ,. (x^2) NB. equivalent of previous line 4{.X NB. show first 4 rows of X1 1.47 2.16091 1.5 2.251 1.52 2.31041 1.55 2.4025  NB. Where y is a set of observations and X is the design matrix NB. y %.
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