PTC MathCAD not providing a matrix when trignometric function present

[ptc-6754545]

Hello,

I'm relatively new to PTC MathCAD, and i haven't found a lot of resources on line - so admittedly I’m struggling a little bit.

Below is an example of an issue I’m having with the software not returning a matrix. When I solve for σ_c, the answer is returned as a matrix. When I solve

for σ, it give me a single value. Based on my observations, it appears the software is choking when it encounters the “sec” function.

Both share the same matrix “a” values.

I’m wondering if anyone has any solutions for this… of if you can tell me what I’m doing wrong.

[AlanStevens · Accepted solution]

When Mathcad multiplies two vectors together (which it does in both Kl and sigma) it produces a scalar. To prevent this, to get element by element multiplication, use the vectorization operator (The Operators menu, the V with an arrow over it in the Vector and Matrix section). Do this to both Kl and sigma.

Alan

[ptc-6754545]

Thanks for your help.

I ended up having to apply the vectorization to the entire denominator.