Matrix Division on the 28C/S (and later)

[edryer]

There is a way to obtain the (approximate) result of a linear system of equations by using matrix transposition of the coefficients, multiplication and finally division... this is a quick handy way to perform this, and being new to Linear Algebra I assumed Matrix division was valid!

From the 28C/S Vectors and Matrices guide (see attachment) the formula (which was new to me), where A is the coefficient Matrix and B the results vector.

What exactly is the 28S doing in solving this system? (Which it does....)


Off topic:
Again, I have found yet ANOTHER way to enter matrices on the RPL machines....
3x3 for example:
1,2,3,4,5,6,7,8,9{3,3 ->ARR (via Softkey)

I have never found methods as fast as the RPL machines for entering and using Matrices, so many ways that all perform the same result! They put a LOT of thought into their work!