Hello PTC Community,
I need help with an error that I am getting while solving a summation expression.
Please refer to the attached image to see the error. Any help would be appreciated.
Solved! Go to Solution.
For the future - please always attach the worksheet itself, not just a picture.
The ex-product (cross product x) is defined for vectors with three dimensions only.
The red encircled expression does not evaluate as such but is a 5-dimensional vector (because of u), while the second part is just a scalar.
What do you have in mind with a cross product of a five element vector with a scalar? What should that be?
What is it really you are looking for? Guess you did not meant to use a cross product, right?
i am trying to write this expression in mathcad prime. (please see the attached pic)
u in the picture is a function (obviously defined elsewhere), taking r as argument.
And the cross "x" seems to just denote a simple normal multiplication of scalars ("*").
What the picture shows is just basic numeric integration (trapezoid rule).
If you vector u holds the appropriate function values, you have to replace u(r[i) in the picture for u[i, etc. And the cross "x" is replaced by a "*". Then it should work OK.