Constant must be 3 element vector

[JackieSmith]

In the last two or three weeks, when I multiply by a constant I receive an error message saying the constant must be a 3 element vector.

Example: d = D - 2 x t

d - ID

D - OD

t - wall thickness

error message states that 2 must be a 3 element vector

I have had to abandon my last three Mathcad calcs because of this error.

Thanks for any help or suggestions.

Jack Smith PE

Stress Engineering Services

[StuartBruff]

What version of Mathcad are you using? Can you post a short worksheet that shows the problem (this will both help a reviewer spot any problem and check whether it can be replicated (thus pointing to either your installation or a generic Mathcad problem)?

Stuart

[JackieSmith]

Mathcad 14.0 M020 (14.0.2.5 [802141434])

[RichardJ]

The operator you are using is the cross product operator, which only works with 3-element vectors. Use the dot product, which you get by typing "*".

[VladimirN]

You need to use "Multiplication * " instead of "Cross Product Ctrl+8":

[JackieSmith]

Thanks to all who responded. I should have known better.

Jack

[VladimirN]

No problem.

[VladimirN]

Hello,

Please attach your Mathcad worksheet to the message (by using "Use advanced editor").