Hello,

When calculating least-squares we use the formXw=y(where

Xis a matrix andyis a vector of appropriate dimensions).

This gives us an approximation, and it can happen that the resultingwwill be such thatXw<y.

Is there a way how to make every entry inwbig enough so that everyXw≥y?

And is it possible, at the same time, to make sure every entry inXwis less that some other number?

Thank you

Best regards

hugo