topic Re: Mathcad Prime in Mathcad

Mathcad Prime

Raj_mathcad — Thu, 03 May 2018 18:58:21 GMT

Prime Users,Does Mathcad Prime has a built-in function to find the squareroot of a matrix?I do not see one with my M14.Thanks...

Re: Mathcad Prime

ValeryOchkov — Sun, 06 Mar 2011 15:53:52 GMT

I see only 2 new built-in tools for an array in Mathcad Prime:

- return a row of a matrix

- return a norm of a vector/matrix

Sorry I think you must create/search an user tools for your task (A=S^2 - it is not a square root of the each element of A - see the attach) in Mathcad 14/15 and Mathcad Prime!

See http://communities.ptc.com/thread/33064

Re: Mathcad Prime

AlanStevens — Sun, 06 Mar 2011 20:06:29 GMT

Raj sharma wrote:
Prime Users,
Does Mathcad Prime has a built-in function to find the squareroot of a matrix?
I do not see one with my M14.
Thanks...

Depends what sort of square root you mean - see attached.

Alan

Re: Mathcad Prime

ValeryOchkov — Mon, 07 Mar 2011 07:50:38 GMT

Sorry,

but a matrix 2x2 is not a problem.

A problem is a matrix 3x3 and more.

Re: Mathcad Prime

AlanStevens — Mon, 07 Mar 2011 08:30:49 GMT

Valery Ochkov wrote:
Sorry,
but a matrix 2x2 is not a problem.
A problem is a matrix 3x3 and more.

Yes, I just used the 2x2 as an example. See attached (in M11 format - though generated in M15) for more general n'th root of matrix function. It includes a 3x3 example!

Alan

Re: Mathcad Prime

RichardJ — Mon, 07 Mar 2011 13:30:41 GMT

Here's a very handy function that Alvaro posted some time ago. It allows you to apply any function to a matrix. In this case, the downside compared to the solve block approach is that you can't find different roots by changing the guess values.

Re: Mathcad Prime

AlanStevens — Mon, 07 Mar 2011 16:50:20 GMT

Richard Jackson wrote:
Here's a very handy function that Alvaro posted some time ago. It allows you to apply any function to a matrix. In this case, the downside compared to the solve block approach is that you can't find different roots by changing the guess values.

Very elegant!

Alan

Re: Mathcad Prime

MikeArmstrong — Mon, 07 Mar 2011 17:29:30 GMT

Here's a very handy function that Alvaro posted some time ago. It allows you to apply any function to a matrix.

Can it be used with the vector sum function?

Mike

Re: Mathcad Prime

RichardJ — Mon, 07 Mar 2011 18:02:19 GMT

Here's a very handy function that Alvaro posted some time ago. It allows you to apply any most functions to a matrix.

What would you expect a vector sum of a matrix to be?

Re: Mathcad Prime

MikeArmstrong — Mon, 07 Mar 2011 18:52:14 GMT

Here's a very handy function that Alvaro posted some time ago. It allows you to apply any most functions to a matrix.
What would you expect a vector sum of a matrix to be?

Matrix sum

Mike

Re: Mathcad Prime

Raj_mathcad — Thu, 10 Mar 2011 01:16:52 GMT

Thanks Alan, Richard and all..

I like the method using eigenvecs and eigenvals functions..

Re: Mathcad Prime

ValeryOchkov — Thu, 10 Mar 2011 05:27:49 GMT

Raj sharma wrote:
Thanks Alan, Richard and all..
I like the method using eigenvecs and eigenvals functions..

And what about cholesky(M)?

Re: Mathcad Prime

AlanStevens — Thu, 10 Mar 2011 08:19:25 GMT

Valery Ochkov wrote:
And what about cholesky(M)?

Only works for symmetric matrices.

Alan

Re: Mathcad Prime

ifomenko — Fri, 25 Mar 2016 12:06:33 GMT

Alvaro function gives wrong result in symbolic case because of symbolic bug.

To exclude this bug it`s necessary to use eigenvec() function instead of eigenvecs() to right mapping of eigenvalues and their corresponding eigenvectors