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omcgleish1-Visitor
1-Visitor
January 2, 2015
Solved

No result obtained from lsolve.

  • January 2, 2015
  • 9 replies
  • 3172 views

I was wondering if anyone would be able to help. I have set up a matrix of coefficients and one of resultants but upon using the lsolve function no results are obtained and no errors are returned. Any help would be appreciated. Thanks in advance!

Best answer by Werner_E

Olivia McGleish wrote:

When I attempt to recalculate using ctrl+F9 there is no answer obtained and no red (I guess which is errors) writing appears.

I have autocalculation turned on and I am using version 15.0 (15.0.0.436).

Thats strange. I glanced at the release notes of the current MC15 release and did not spot any fixed bug which would relate to that effect. Nevertheless it would be worth a try to update to the current MC15 [M030].

Other ideas: contact PTC support OR reinstall Mathcad.

As you can see in the pic below your sheet evaluates as it should for me,

You can obtain the solution by basic matrix operation, too, as shown in the pic.

1.png

9 replies

Werner_E
Werner_E25-Diamond I
25-Diamond I
January 2, 2015

What happens here?? Your file performs pretty well for me and we got the very same question with the same file here but the original poster did not come back to answer the questions.http://communities.ptc.com/message/267380#267380

Have you autocalculation turned on?

Which version (and which maintainance release) of Mathcad are you using?

O
omcgleish1-VisitorAuthor
1-Visitor
January 2, 2015

When I attempt to recalculate using ctrl+F9 there is no answer obtained and no red (I guess which is errors) writing appears.

I have autocalculation turned on and I am using version 15.0 (15.0.0.436).

Werner_E
Werner_E25-Diamond IAnswer
25-Diamond I
January 2, 2015

Olivia McGleish wrote:

When I attempt to recalculate using ctrl+F9 there is no answer obtained and no red (I guess which is errors) writing appears.

I have autocalculation turned on and I am using version 15.0 (15.0.0.436).

Thats strange. I glanced at the release notes of the current MC15 release and did not spot any fixed bug which would relate to that effect. Nevertheless it would be worth a try to update to the current MC15 [M030].

Other ideas: contact PTC support OR reinstall Mathcad.

As you can see in the pic below your sheet evaluates as it should for me,

You can obtain the solution by basic matrix operation, too, as shown in the pic.

1.png

    O
    omcgleish1-VisitorAuthor
    1-Visitor
    January 4, 2015

    I have updated my mathcad and it now works. Thank you for the help and the download link!

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