Mac Dude

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14 years, 120 days

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These are questions asked by Mac Dude

Hi; I am working on a package where the data mostly come in Maple records with a varisble number of fields with different names. At least one field in each record has a 6 by 6 matrix, the expressions of which involve the values associated with at least some of the other fields.

Occasionally I have the need to, say, apply a function to each of these fields. E.g., I want to substitute a value for a specific name; this name may show up in several fields and also will show up in the matrix.

I have written a procedure that creates lists of numbers (for later plotting, but that is irrelevant here). These lists I have programmed as 1-d rtables (Vectors and Arrays). Since I do not know initially how many entries the procedure will generate I am using programmer indexing (with round braces) so the Arrays and Vectors get extended as needed, 1 entry at a time. Basically; I dynamically allocate storage in this way. Maybe not the most efficient way but should work for now.

Here is a possibly stupid one: I have written a couple of help files for a package I am developing. As things go; I want to update one. In the help system it tells me to edit the .mw file that i used to write the page in the first place, which I did. But then I am supposed to "Save to Database" from the Help menu.

But... there is no entry to "Save to Database..." in any menu; help or otherwise. Not even in the help system. So I am stuck with an edited help page that I cannot get to ...

Hi, is there any sane way to incorporate Maple 2-D output in PowerPoint, 2004 in my case (and 2004 does not support MathML, I believe)? Preferably I'd copy from Maple and Paste into ppt. I have not been able to make that work.

The pedestrian way right now for me is to use Grab and take a screen shot of the expressions. Not a nice way...

Thanks,

Mac Dude

I was using "eliminate" to combine a set of equations removing some variables and getting a clearly wrong result. So I looked at the docs and the first example, and I find I don't understand its result either. Here is the example:

sol:=eliminate( {x^2+y^2-1=0, x^3-y^2*x+x*y-3=0}, x); # eliminate x from this set & leave one eqn of y

This returns:

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