I hadn’t used the matrix panel in TeXShop for some time (certainly not since my last update) and now that I want to use it I am having difficulty.

I tried to create a 2x2 matrix: set the brackets, set 2 rows, 2 columns. The first row shows up all filled in in red, and there are zeroes in the first

two entries of the second row. I can enter a symbol in the (1,1) position, but when I try to do so in either (1,2) or (2,1) I get the sound that says “no go”.

Has anyone else had this problem? I am at a loss as to how to approach fixing it.

Zbigniew Nitecki

Department of Mathematics

Tufts University

Medford, MA 02155

telephones:

Office (617)627-3843

Dept. (617)627-3234

Dept. fax (617)627-3966

http://www.tufts.edu/~znitecki/

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