Hello!

I'm having the following problem;

I try to plot a 1D matrice with a sequence, or a 1D matrice and I get a result that "this value must be real". Now.... what!?

Help is much appreciated,
Uku

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 Quote by Uku I try to plot a 1D matrice with a sequence, or a 1D matrice and I get a result that "this value must be real". Now.... what!? I am using MathCAD 14. Help is much appreciated, Uku
I see your matrix has an unspecified index "abi".
Remove the index "abi" from M, and it should work a lot better.
I'm assuming you want i to iterate over the values in M.

Also, if you want to do something with i in the definition of M, you need to make sure i is in the document before M, otherwise MathCAD will think i is the imaginary number sqrt(-1).

How did you define i? Did you type i:1;12 (which is the proper way)?[/Edit]

If you really want, you can put an index "abi" in as just a name without symbolic function.
To do this I believe you need to type M.abi instead of M[abi.
 Hoi! Thanks for the reply, the problem is solved. Sincerely, Uku

Hello

Help me !!!
My mathcad all the time show THIS VOLUE MUST BE REAL. This is my equation:
http://www.physicsforums.com/attachm...1&d=1350934907

THX for help
Attached Thumbnails

 Quote by dawidk89 Hello Help me !!! My mathcad all the time show THIS VOLUE MUST BE REAL. This is my equation: http://www.physicsforums.com/attachm...1&d=1350934907 THX for help
I can't see the entire plot to try and work out what you've done ... posting a worksheet as well as an image is generally helpful as several problems are not obvious from just a screenshot (also saves respondents typing things in). Try plotting F(10) against F(10), or assiging F(10) to a variable and plotting that using a standard range variable technique.

See attached Mathcad 11 format file.

Attached Thumbnails

Attached Files
 phys - 12 10 22 plot vector function.mcd (11.3 KB, 1 views)