Hi,

If I have boolean variable x1

And assuming multiplication means "AND" for boolean expressions;

and that addition means "OR"

Then

  x1 = x1^2 = x1^3 = ...=x1^k, k >= 1

Since "x1 and x1 and x1 ... and x1" = x1;

it is true if x1 is true and false if x1 is false.

How can a boolean expression with variables taken

to various powers be simplified?

I can't take credit for this; but Dave Rusin showed

Many popular online sites, such as OEIS, for example, have online refereed journals.

When this site was in beta, this idea also was suggested for Mapleprimes.

It would be great if it was finally implemented. There are enough people here now for a good editorial board. I suggest Robert Israel as the Chief Editor.

This topic was discussed many times.

Originally I didn't think that it is a good idea, because who would write the original basic stuff? Maple is a complicated program, and even the basic stuff would cover thousands of pages. The competent people don't have time for that, and what incompetent people can write would be interesting only for them and not for anybody else.

Now I got another idea - the basic stuff can be created from the Maple help pages converted to html. But that could be done only in Maplesoft supported wiki. On this site, for instance.

> with(plots):
> with(plottools):
> plot1 := plot(1, t = (Pi-Pi/4)..(Pi+Pi/4), filled = true, color = coral):
> H := transform((t, r) -> [4*(1-r)*cos(t)+3*(r)*cos(t), 4*(1-r)*sin(t)+3*(r)*sin(t)]):
> display(H(plot1),view = [-5 .. -5, -4 .. 4]);

I have tried to find something in Help that describes the difference, but no luck. I found that many of the math items that I entered were 2D Input, yet when I toggle using F5, I get Text <> 2D Math. How did I wind up with 2D Input? Copying and pasting?

~Rich~

Filter and Ignore list are standard features of many forums and newsreaders. For example, when I want to look through the Maple newsgroup, I use a newsreader with my Ignore list and see only 3-5 posts instead of 3 or 5 thousands posts without that.

The situations on this site is not that bad, but still there are some users trying to spread their incompetence across the Universe, and I cannot use my newsreader for filtering them out. Could it be possible to implement that feature - Ignore lists in the next major release of Mapleprimes?

Good morning.

Can anyone tell me why the legends are showing up today when they were not yesterday?

...and I intermittently get Plot Builder dialogs when I edit the commands associated with these two plots...

...Maple 12 seems unstable and unpredictable...is contant rebooting of Windows necessary when using the doc mode?

Print preview doesn't respond to PageUp and PageDown keys.
It would be nice to control the size of plots w/o using the embedded components.
Plot should accept: nolegend or legend = [] (empty set). Many times I don't want a legend, and I shouldn't have to specify something like "legend = ["", "", "", ""]".
 

~Rich~

To help me learn Maple 12, I decided to translate a small project that I did into Maple.

1. Why is there an error in my text field at the beginning of the doc?

2. When I apply a new style to a paragraph, all the text changes to plain text: all formatting is removed. Is there a way to simply change the style and not the formatting, such as Italic?

3. I tried to follow the instructions in one of the training videos on how to hide math. As you can see, the assignment to d is still visible. Can simple assignments be hidden?

Hi,

whenever i want to plot a function without specifying an initial plotting range, for example by rightclicking on an expression and select plot, i get an y-range from 0 to 10^9 or worse. It happens  mostly when  the expression contains poles, for example 1/x^3. A better heuristic would be nice.

Suppose you want to solve a large dense linear system AX=B over the rationals - what should you do? Well, one thing you should probably not do is directly apply Gaussian elimination. It does O(n^3) arithmetic operations, but the size of the numbers blow up, leading to an exponential bit complexity. Don't believe me? Try it:

with(LinearAlgebra):
for N from 5 to 9 do
  A := RandomMatrix(2^N, 2^N+1,generator=-10^5..10^5):
  TIMER := time(GaussianElimination(A...

What is the right code to produce a sequence of iid NegativeBinomial random variables with Statistics package? It seems the natural choice only works correctly for size parameter equal to one when combined with Sample, though the theoretical moments are always correct. What's wrong with my code? Pls see http://www.mapleprimes.com/files/7371_NBD-problem.mw Thanks heaps.

I just installed Maple 12 (Home User version).  The first thing I checked was whether Maplet Builder is still part of Maple.  It is.  Then I checked whether, having built a maplet with Maplet Builder, you can run it from within Maplet Builder.  I saw the same behavior as in Maple 11:  You are out of luck if your maplet contains a MathMLViewer window--you have to save the maplet and run it standalone to see it run.  In other words, no change in Maple 12.  This may discourage people from using Maplet Builder, but I have a feeling Maplesoft may not see that a

Hi,

I would like to suggest that Maplesoft provide a Finite Element Analysis package.

A straightforward well-supported way of setting up these problems would definitely be of value to those who are not experts.

Regards.

Sloane's On-line Encyclopedia of Integer Sequences has the following entry:

A110375  Numbers n such that Maple 9.5, Maple 10 and Maple 11 give the wrong answers for the number of partitions of n.   
 
 11269, 11566, 12376, 12430, 12700, 12754, 15013, 17589, 17797, 18181, 18421, 18453, 18549, 18597, 18885, 18949, 18997

I wonder whether that can be extended to Maple 12 as well (I don't have it to check.)

Alec