Skip to main content
B
bcoppola4-Participant
4-Participant
May 10, 2012
Question

Problem using variable defined in solve block

  • May 10, 2012
  • 1 reply
  • 4022 views

Hello,

I am having a problem using a variable after it was defined with a solve block with the find command. It seems like the variable is assigned correctly, but when I try and use it later in the sheet in another solve or find command it gives me an undefined variable error. The error traces back to the assignment on the variable in the original solve block. Please see attached.

Thanks

1 reply

M
MikeArmstrong1-Visitor
1-Visitor
May 10, 2012

Because the symbolic processor doesn't understand units.

Mike

M
MikeArmstrong1-Visitor
1-Visitor
May 10, 2012

Also, why are you trying to solve symbolically?

You have theta and theta1 as unknowns in the final equation.

Mike

B
bcoppola4-ParticipantAuthor
4-Participant
May 10, 2012

I know I just need to rearrange the equation and it would work, I am just trying to understand the problem so I don't have it again in the future. It's sometimes hard to troubleshoot in mathcad, at least I think so, so I try to figure out what is causing different problems as I come across them.

So the symbolic solver gets confused with units? I knew that was the case for the ODE solver but I thought it was alright for other solvers.

Thanks

Terms & ConditionsAccessibility statement