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O
OscarJ.1-Visitor
1-Visitor
January 3, 2012
Question

Reduced row-echelon form matrix

  • January 3, 2012
  • 5 replies
  • 12180 views

Good morning,

I am using the "erl" function to get the reduced row-echelon form of a mxn matrix. However, the results in MathCad 15 shows some fractions. If you make some han calculations you can get the unit form matrix (only 1/0 in the upper left portion of matrix) and thats the result that you get from other software like Maple, MatLab or making all reduction steps by hand. I am wondering if there is any way to get this from MathCad.

Regards,

Oscar J.

5 replies

V
24-Ruby III
VladimirN24-Ruby III
24-Ruby III
January 3, 2012

Can you attach Mathcad worksheet?

O
OscarJ.1-VisitorAuthor
1-Visitor
January 3, 2012

MathCad example.

Regards,

Oscar J.

V
24-Ruby III
VladimirN24-Ruby III
24-Ruby III
January 3, 2012

It seems that only Mathcad 11.0a gives the desired result (see the comparison of results below).

Mathcad 11.0a:

MC11.0a.png

Mathcad 15 M010:

MC15_M010.PNG

Mathcad Prime 1.0:

Prime_1.0.png

V
24-Ruby III
VladimirN24-Ruby III
24-Ruby III
January 3, 2012

Oscar Delgado wrote:

...I am using the "erl" function...

User-defined function?

V
24-Ruby IV
ValeryOchkov24-Ruby IV
24-Ruby IV
January 3, 2012

erl is your user function?

O
OscarJ.1-VisitorAuthor
1-Visitor
January 3, 2012

Good morning,

I use MathCad in french. For me the function "rref" is "erl".

<<erl(A) renvoie la forme échelonnée réduite de A.>>

Regards,

Oscar J.

V
24-Ruby IV
ValeryOchkov24-Ruby IV
24-Ruby IV
January 3, 2012

Oscar Delgado wrote:

Good morning,

I use MathCad in french. For me the function "rref" is "erl".

<<erl(A) renvoie la forme échelonnée réduite de A.>>

Regards,

Oscar J.

The French simply can not calm down and accept that the French language ceased to be a mathematician language

Rename built-in function?!

What is the name of this finction in china or italian version of Mathcad?

We partly use Russian names of function in Russian version of Excel if - если, max - макс etc. But main part of function has origin english names.

O
OscarJ.1-VisitorAuthor
1-Visitor
January 4, 2012

Good morning,

Please see the last post in:

http://communities.ptc.com/docs/DOC-2429

Regards,

Oscar J.

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