Least Square with condition

[Matt J]

Which b? You have two.

[Harel Harel Shattenstein]

Fixed it

[Matt J]

Looks like your Vandermonde matrix is flipped left-to-right. Or your [a,b,c] vector is upside down.

[Matt J]

Note: instead of eliminating 'c', you could also just use lsqlin() with an equality constraint.

Answer 1

[Matt J]

Seems to me that B should equal y.