Get Help

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- Community
- :
- PTC Mathcad
- :
- PTC Mathcad
- :
- MathCAD 13 lsolve()

Options

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Mute
- Printer Friendly Page

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

Highlighted

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Notify Moderator

05-01-2013
08:26 AM

05-01-2013
08:26 AM

Hi there,

I am working with multiple version of MathCAD (don't ask my why, I know it is stupid but I have no other choice) to construct some worksheets (version 13.1 and 14).

Now, in one worksheet I use the function 'lsolve()' to solve linear system of equations Ax=b. Where 'A' is an mxn matrix with m>n and 'b' is an 'mx1' matrix.

In MathCAD 14, the 'help' explains that, if the system of equations is inconsistent (e.g. if m>n) lsolve returns the least-squares solution of the system. In the help of MathCAD 13 this is not stated.

My question now is, what does lsolve() return in MathCAD 13 if the system of equations is inconsistent?

thx,

rubseveni

Solved! Go to Solution.

1 ACCEPTED SOLUTION

Accepted Solutions

Highlighted

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Notify Moderator

05-01-2013
08:37 AM

05-01-2013
08:37 AM

My question now is, what does lsolve() return in MathCAD 13 if the system of equations is inconsistent?

Probably the sasme thing. Mathcad help tends to be almost an after-thought, it gets changed if someone complains.

I suggest you give both version 13 and 14 the same problem and compare the results.

3 REPLIES 3

Highlighted

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Notify Moderator

05-01-2013
08:37 AM

05-01-2013
08:37 AM

My question now is, what does lsolve() return in MathCAD 13 if the system of equations is inconsistent?

Probably the sasme thing. Mathcad help tends to be almost an after-thought, it gets changed if someone complains.

I suggest you give both version 13 and 14 the same problem and compare the results.

Highlighted
##

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Notify Moderator

05-01-2013
08:39 AM

05-01-2013
08:39 AM

Re: MathCAD 13 lsolve()

Are you experiencing differences in the result when you evaluate the same WS under MC13 and MC14?

Highlighted
##

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Notify Moderator

05-29-2013
04:48 AM

05-29-2013
04:48 AM

Re: MathCAD 13 lsolve()

I am not experiencing difficulties in the results under MC13-14 or 15

(sorry for the late reply)