Running a check statement using If/then, variable undefined

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@SA_10030091 wrote:

Hi all,

 

I'm currently trying to run a quick check on my Mathcad worksheet that populates a "Yes" or "No" to validate whether the section modulus value is above the required one.  When I place the yes and no variables in the program it says they're undefined.  I switched them to the "keyword" label in hopes that would remedy my situation, but unfortunately I have the same issue.  Attached is a snippet of what I currently have in the worksheet.  Please let me know your thoughts.  Thanks!

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Have you defined Yes and No?  If not, just put your Yes and No in quotes.

Although it would sometimes be useful for Mathcad's numeric engine to return the name of an undefined variable, Mathcad treats undefined variables as an error.

If you used Mathcad's symbolic engine, then Mathcad would return the names of undefined variables (it treats them as just symbols).  However, there is normally a performance penalty to pay for using the symbolic engine (it can be quite slow) and it won't do everything the numeric engine will.

Here's an example using defined variables.

Stuart

Hi,

I ask the question a little differently as it is easier to understand like this.

Cheers

Terry