Download sprintf_1.mw

As worded, your query seems to be about the sprintf command, and the construction of the filename string to be assigned to fname by using multiple assigned names, rather than about the save command.

See also the Help page for sprintf, for explanation of the modifiers %a, %s, etc. (Apart from its ability to handle symbolic expressions, that Maple command is much like the C language command of the same name. You can find similar commands in C++, R, Matlab, etc.)

However, if you ever do have multiple assigned names (eg. A,C,F) that you wish to save to the .m file then you could pass them as follows,

   save A,C,F fname;

Is this along the lines of what you're trying to accomplish?

Download congruence_symbol.mw

For the subscripts in italics,

   labels = [':-delta__0', ':-s__2']

For the subscripts in upright roman,

   labels = [':-delta[0]', ':-s[2]']

Those should both work even if those names are assigned values (before, or afterwards), and even if this code appears in a procedure with locals like those names.

Another (longer) way, with both base-name and subscript in upright roman,

   labels = [Typesetting:-msub(Typesetting:-mn("δ"),Typesetting:-mn("0")),
                  Typesetting:-msub(Typesetting:-mn("s"),Typesetting:-mn("2"))]

Download Integration_issue_ac.mw

Do you mean this video, available on youtube? (There is also a static PDF document of that.)

One other simple way to handle this example, aside from just the previously mentioned convert(x in solve(sl10),relation), is,

Download Combined_Inequality_ac.mw

This new example can also be handled with the procedure I gave you last week (capable of handling some more involved compound examples), ie.,

Download some_2D_range_ineq_2.mw

note: The call solve(sl10) returns RealRange(-3,1), and your Question from last week was just about turning such closed set forms into inequalities. So, this really is almost the same Question.

In future please add such close followup queries as Replies/Comments in your earlier Question thread (or at least use the Branch button from there to create a related/linked new Question), instead of spawning a wholly separate new Question thread.

Both the commands to generate the teams, and the commands to printf the teams, can be done as simple one-liners.

The number of members of a team (or that minus 1) only appears once in each of those one-liners.

Download teams_ac.mw

If you wanted a reusable procedure that did both the construction and the printf,

Download teams_ac2.mw

It looks like you have mistakenly split the do-loop code across Document Blocks (or Execution Groups, though there's a slight hint in your posting that you might be pasting into Document Blocks).

Don't press Enter/Return, while typing/pasting in the Block/Group with that do-loop code. That would execute what's entered so far, and split it.

You can use Shift-Enter to get to a new line, when editing in a Block/Group.

If you look at the example in the subsection "Getting the Number of Elements in a List" of Section 4.3 or the Programming Guide (which seems to be your example), then you can see that all the red code of the while-do loop is within the same Execution Group.

That is, the beginning while, and the end do, and all the loop's contents between those, must be within the same Execution Group (or Document Block). Otherwise you'd get those kinds of error messages.

Here's what it might look like, if accidentally split. Notice the left border of the Maple GUI can show Markers that denote the Block/Group boundaries.

Download doc_block_oops.mw

I dug around and found this in the vault (edited slightly to get rid of the infinity, which solve only sometimes removes).

This kind of thing has been asked before, both the basic query about conversion of a real range to inequality relations, as well as simplification of compound examples.

The basic examples are a common flavor, for such there is a dedicated command, as has been mentioned: convert(...,relation).

A related idea is that one can do some simplification for some more involved examples. Also, on output, multiple conditions and multiple solutions can be displayed using Or/And, or %or if one wants, or (last link in end note) union/intersect.

I put the RealRange inputs into 2D form, for fun.

Download some_2D_range_ineq.mw

[edit] It's it's of interest, here are a few old postings on related (or more involved) queries: 1, 2, 3

Given the input ode, why not go straight to,

   has(convert(ode,D),y(x));

without any replacement by Z^N terms.

The simplest (and most effective and efficient way, IMO) is to use a so-called operator form calling sequence of the evalf(Int(...)) or int(...,numeric) or int(...,0..6.0) commands, where the integrand is supplied as an operator/procedure f rather than a function call like f(x).

There are several ways to get it to work instead with something that looks like an unevaluated function call (of x, like f(x), say) as the integrand. But they are often unnecessarily more complicated than the above. I'll show a few such ways.

Download Using_interpolation_ac.mw

You could add the dirfield option, eg.
   dirfield=[11,11]

And you can blend this with other options, eg.
   'arrows'='comet',dirfield=[11,11],arrowsize=1.2

You can save all the assigned names (including just user-defined names), but there's no easy way to save&restore all internal state including memoized results in remember tables and caches.

That's not to say that it's generally impossible (for, say, an expert), especially for Library routines. However there's no stock command for it.

Saving/restoring all the remembered results in all kernel built-ins (eg. evalf, series, etc) might be much harder and perhaps not possible.

Since there are several flavors to this, it would be better if you supplied a concrete, representative example.

Your eval calls attempt to replace names like f__1, f__2, etc, but your expression M actually contains f[1], f[2], etc.

plot_a_ac.mw

Here are a few ways, which you might adjust with options, etc.

My "trick" is to create a system for each param1 value, instead of trying to use it as a DS TransferFunction `parameter` in that routine's technical sense.

[edit: I added plots:-animate]

simple_bode_ac.mw