Mathcad 12 simple problem

Posted on 2006-05-20
Last Modified: 2011-09-20

I just installed Mathcad 12 for some simple timming pulley calculations. I get the software to be stuck in some wierd calculation loop that seem to take forever when I use PI (Greek letter) constant.

If I redifine the PI value myself I get a warning from Mathcad ("This expression redefines a Mathcad built-in constant") but the calculation gets done.


a := sin(PI)

a =

Am I doing something wrong?

Thanks in adavance for all the help.

Manuel Silva
Question by:intercad
    LVL 44

    Assisted Solution

    you do realize that Sin(Pi) = 0?


    Author Comment

    Is that a reason for the software to freeze?
    LVL 26

    Accepted Solution

    "Am I doing something wrong?"


    When I repeated your example I had no trouble whatsoever. MathCad reported a = 0.

    Now what is your provlem. A good guess is that some place you divided by 0 because, as Arthur_Wood sreported sin (pi) = 0. When you redefined pi you probably did not do it to the 15 decimal places that MathCad uses so that sin( your pi) was not quite 0.

    There are a number of other consideration. Were you asking for a numerical calculation? Were you asking for a symbolic calculation? How complicated was your expression?

    If the above does not answer your question give me more details or send me the complete MathCad program and I will try to run it on my machine. (assuming that your problem will translate to MathCad 8.)

    Author Comment

    The problem must have something to do with Mathcad 12 installation. I tested the above example in Mathcad 13 and it returned a = 0 as expected.

    About the former problem. There were no divisions by zero. The above above example were the only expressions on the worksheet. I was asking for a numerical calculation. When I redefined PI value I got a result as precise as the PI value aproximation suplied. I got a = 0.

    Thanks for your cooperation. I split the points between you two.

    Featured Post

    Why You Should Analyze Threat Actor TTPs

    After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

    Join & Write a Comment

    Suggested Solutions

    Title # Comments Views Activity
    Python tuple index error 4 58
    sending sweets to asia!! 5 57
    Sample Space 12 35
    Energy conservation - Edward Leedskalnin 20 51
    A Guide to the PMT, FV, IPMT and PPMT Functions In MS Excel we have the PMT, FV, IPMT and PPMT functions, which do a fantastic job for interest rate calculations.  But what if you don't have Excel ? This article is for programmers looking to re…
    Article by: Nicole
    This is a research brief on the potential colonization of humans on Mars.
    Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
    Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

    730 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    16 Experts available now in Live!

    Get 1:1 Help Now