indices problem

Forum|Forum|3 years ago
October 19, 2022
3 replies
2341 views

Hello...just started back into MC and have a question re; this error I'm getting re: a summation:
Why does is it say the variable is undefined when it IS defined? what am i missing?
I enclosed a snapshot of what i'm talking about
Thanks for any help?

Mathcad Usage

Best answer by Werner_E

Would this help?

W

Werner_E

25-Diamond I

Its always better to attach the worksheet itselft rather than just a picture.

Are you aware that Prime uses two different types of indices - literal indices and vector/matrix indices?

Chances are that you used the wrong ones.

A vector index is just an integer. So you could not use something like z.k1 but rather would use z.10*k+1

Furthermore you have to know that if you define z.11:=... you are defining a 12 element vector (assuming you have not changed the value of ORIGIN which is 0 by default). Unless you have them defined before, all other elements of the vector z (z.0, z.1 ... z.10) are set to zero.

R

RA_6373991

Author

1-Visitor

ok..so I should use the literal version then?..how do i access/implement that? I just used "operators"--> and picked the one with the
subscript matrix index.
Sorry about the pic..i was hoping that would be clear..