Dear Colleagues, I need your cooperation.
How to make the following graphs to illustrate the SVD of a Matrix

There is a proper function of Maple to perform matrix left division?
This procedure is right for the calculation of the uncertainties of the coefficients?
There are large these uncertainties?
Comment?

I want to implement from the following,

> A := `<|>`(`<,>`(6, 2, 1, 6, 8, 3), `<,>`(4, 3, 7, 1, 7, 2), `<,>`(3, 7, 2, 4, 3, 9));

> b := `<,>`(55, 37, 40, 33, 60, 75);

the procedure:

A x X = B
X = A x BA = U x S x V (Singular value decomposition of A)
A = V x S x U(Generalized inverse or pseudoinverse of A)
X = V x Sx Ux B

Least square fit solution
x = 2.63293929474354
y = 3.66652382290048

Hi colleagues,
How to determine if a point belongs to a plane, considering the uncertainties of the coordinates of the point?
I'm stuck in this task. I remember seeing a taks that makes this task, but does not take into account uncertainties;
Gracias
 

Hello Colleagues, I attached a maple worksheet. 
View 9494_Graph_Components.mw on MapleNet or
 Download 9494_Graph_Components.mw
View file details

In which I have the following concerns: