Les

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3 years, 219 days

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These are questions asked by Les

The attached worksheet performs two functions:

(1) It lets me print 4 × 6 Index Cards for the short entries in each table.

(2) It allows for easy storage and retrieval of syntax (code).

The worksheet has many tables, each separated by a Page Break.

Questions:

(a) Is there a way to sort all the different tables so they will be arranged in alphebetical order?

(b) When I select one table to print and open the Print Dialog, the "Selection" option is grayed out. (see graphic below).  (1) Is there a way to enable the selection option?  (2) Is there a way to determine what page I am on so I can use the "Pages from...to" option?  If I need to number the pages, will the page numbers reset to parallel a new alphabetic sort order.

Many thanks in advance.  See WC29_4_BY_6_NOTE_CARDS_UNSORTED.mw attached. And see image of Print Dialog below.

Les

Could someone help me with the following.  The syntax produces an unfinished graph with a warning.

> with(plots);
> z := polar(1.05, (1/10)*Pi);
                             
> display(polarplot(1, color = grey, axis[radial] = [color = "Blue"]), complexplot(seq(evalc(z))^n,
n = 1 .. 21));

Warning, unable to evaluate the function to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct

the graphic looks like this

The graphic should look like this

Thanks, any help appreciated.

Les

 

Maple 2015

Using with(combinat) the permutation of {a,b,c} is determined.

>restart:
>with(combinat):
>permute({a, b, c})
                  [[a, b, c], [a, c, b], [b, a, c], [b, c, a], [c, a, b], [c, b, a]]

The tree diagram of this permutation is

    

In Maple, using with(combinat) and with(GraphTheory), when I attempt to draw the permutation I get the following error:

>L := permute({a, b, c});
       L := [[a, b, c], [a, c, b], [b, a, c], [b, c, a], [c, a, b], [c, b, a]]
>DrawGraph(L);
  Error, invalid input: GraphTheory:-DrawGraph expects its 1st argument, H, to be of type       {GRAPHLN, list(GRAPHLN), set(GRAPHLN)}, but received [[a, b, c], [a, c, b], [b, a, c], [b, c,      a], [c,   a, b], [c, b, a]]

On Maple, again using with(combinat) and with(GraphTheory) the command permute(3) is used.  The results are manually configured as node-connection lines.  A fair representation of the tree diagram is configured by Maple, although the diagram has numeric instead of alpha configurations, and the a,b,c structure shown above is not easily recognized.

Any suggestions on developing a procedure that will graph (draw) an alpha-labeled permutation welcomed.  Thanks!  WC44_Permutation_Graph.mw

Is there a way to determine the coordinates of all the vertices of a cuboid using geom3d?

See WC06_Vertices_of_a_Cuboid.mwWC06_Vertices_of_a_Cuboid.mw attached.

The graphic of the cuboid is created with

A:=(cuboid([1,1,2],[3,4,5]), orientation [27,78],lightmodel = light4, shading = none, transparency =.85,scaling = constrained, axesfont = [bold, roman, 18], axes = normal):

And the vertices are self-evident, for example 

B:= pointplot3d({[3,1,5]}, symbol = solidsphere, symbolsize = 18, color = red):

One geom3d ....

geom3d[point](P,1,1,2): geom3d[point(Q,3,4,5): geom3d[distance](P,Q); 

gives the lengths of the diagonal of the box.  Is there a way to get geom3d to list the coordinates of the 8 vertices of a cubeoid?

How do I move a circle around a sphere?

See attached:  WA61_circle_sphere_post.mw

Circle shares surface area of sphere, how can circle be moved independently around sphere?

I would like to retain the patchwork of the sphere to resemble latitude/longitude lines.

Thanks in advance

Les

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