This array index is invalid for this array

[ptc-4999498]

hello

I am trying to replicate a relatively simple worksheet from:

http://www.alueurope.eu/talat/lectures/2301ex/ex81.pdf

I get the above mentioned error when typing the infromation about sectorial coordinates on the page 2. I have also attached the worksheet. How come it works for the author of the document but not for me? Is it because it is another version of MathCAD? If so how can I fix it?

Thanks in advance

[Werner_E · Accepted solution]

There are two completely different subscripts to be used in Mathcad - the literal subscript you get with the period which has no special meaning other than looking like a subscript and the vector/matrix subscript you get by typing "[" after the variable name which is meant for accesing elements of a vector or matrix. But you obviously know that, as you have used both indices in your sheet.

You have just used the wrong subscript when assigning omega[0:=2mm^2.

[ptc-4999498]

Thanks! .. I didnt even notice that!

[VladimirN]

Yama Taj wrote:

...I am trying to replicate a relatively simple worksheet from:

http://www.alueurope.eu/talat/lectures/2301ex/ex81.pdf

...

Interesting materials for the study:

http://www.alueurope.eu/talat/