I want to center align all the math in my document. I have not been able to find a shortcut key for alignment, and I cannot find a default setting for alignment anywhere. I don't want to mouse click every single time.

Please help, thanks!

Howdy,

I am trying to do explicit Lie algebra computations, and I am not sure the best way to automate these.

Suppose I have a Lie algebra with basis e1 through e8, and I have some linear functions:

f(e1,e2) = c1e1+c2e2+...+c8e8

Now suppose I want to compute something like

[e5, f] - f([e5,e1],e2) + f([e5,e2],e1), or more generally x.f with the typical module structure.

I can do this line by line - say [e5,e1] = -e1 and [e5,e2] = 0, then I can ask Maple for LieBracket(e5,f)+f(e1,e2)-0. However, I'd like to make an operator that does this for me. Can anyone please point me in the right direction?

Thanks!

If we solve the equation  x^x=1/sqrt(2)  in Maple 2018.2, then Maple returns only one solution  x=1/2 , although this equation has 2 solutions  x=1/2  or  x=1/4 . This can be seen if you plot graphs or , for example, solve by the  Student:-Calculus1:-Roots  command. In this case, the root  x=1/4   is returned only as a numerical approximation. I wonder if this bug has been fixed in the latest versions of Maple?

restart;
solve(x^x=1/sqrt(2));
Student:-Calculus1:-Roots(x^x=1/sqrt(2));

condi := [p1 + p2 + p3 = 1];
simplify(s, condi);
                  condi := [p1 + p2 + p3 = 1]

 /      c (-1 + p1 + p2)        c (-1 + p1 + p2)         
{ a = - ----------------, b = - ----------------,           c = c, 
 \             p1                               p2                

      c (p1 + p2) (-1 + p1 + p2)           c (p2 - 1)          c (p1 - 1)
  d = --------------------------,             e = ----------, f = ----------
                p1 p2                                       p1                 p2    

  \ 
   }
  / 

assigne(%);
c := 10;
a := factor(simplify(a, condi));
b := factor(simplify(b, condi));
d := factor(simplify(d, condi));
e := factor(simplify(e, condi));
f := factor(simplify(f, condi));
                            c := 10

                             a := a

                             b := b

                             d := d

                             e := e

                             f := f

NULL;
Why "factor" does not play its role ?   Thank you.

I'd like to be able to define functions with units and then use them.

In the example below, things don't work with Maple input. I've shown one example, with the function f2.

It seems to work better with 2D input, but it seems that it is not possible to make plots.

In the example below, I define f4 as a function of two variables that returns a function of one variable.

I'd like to call the outer function, obtain a function as a result (r1 below) and then plot the latter.

The contents above aren't showing the error that Maple gives when I try to plot.

Here is a screenshot

Download FunctionUnits.mw

I have a variable with the unit Volt.

I'd like to print something like "The voltage is %f" where the floating point is the value of the variable with the unit.

I've tried the options below so far.

How would one accomplish this?

Download PrintUnits.mw

Performing

II := int( Dirac(x^2+y^2-1), x = -infinity..infinity )

gives 

II = 1/sqrt(abs(y^2 - 1))

with no restriction on y. It seems that the answer (at least to the question I thought I was asking) is actually 

II = 1/sqrt(1-y^2) for y\in[-1,1], 0 else

Am I misunderstaning the meaning of Dirac and its integral?

Hi all,

How Can I sort a list of polynomials with parametric coefficients based on the following criteria?
1. Fewer different parameters in the coefficients.
2. If the number of parameters is the same, the lower power of the parameters.
3. If the previous criteria are the same, sentences with parametric coefficients appear later.

Otherwise, the list is in order. For example, I want to obtain the sorted list 

[(a+2)*x[1]+3*x[2]-x[3]+(a-2)*x[4],2*x[1]+2*x[2]-b*x[3]+(c+1)*x[4], (a-1)*x[1]+x[2]+(a+1)*x[3]+(C^2-1)*x[4], (a+b)*x[1]+(c-3)*x[2]+(-b-1)*x[3]+2*x[4]] from the following list:

[(a-1)*x[1]+x[2]+(a+1)*x[3]+(C^2-1)*x[4], 2*x[1]+2*x[2]-b*x[3]+(c+1)*x[4], (a+2)*x[1]+3*x[2]-x[3]+(a-2)*x[4], (a+b)*x[1]+(c-3)*x[2]+(-b-1)*x[3]+2*x[4]]. 

Could you please guide me?

Thanks.

Good day. 

I recently constructed a Maple model using an LPSolve routine to solve for a classic factory (Operations Research) assignment problem. Basically, this involves 4 factories that, in any combination, can supply goods and fulfil demand to 10 customers. If any given factory is activated, the model determines what factory should supply what customer so that the weighted-distance is minimized.

However, in addtion to this - I would like to know the quantity of items that each factory supplies to each of their respective customers and I would like to verify that the quantity demanded by each customer is fulfilled. 

I was hoping that somebody could guide me on how to do this. Any suggestions would be most welcomed.

The model is attached.

Thanks for reading!

MaplePrimes_Jan_27.mw

I am trying to draw the streamline for my coupled system but do not get the outcome. Could anyone please help in this regard?

Detail: My system contains x and y;  Regrading x=0, if I do not assign it to zero, do not get the results. Otherwise, there is no need to put x=0 because I am interested in plotting stream plots between y and x (y on the vertical axis and x on the horizontal axis). Besides this, I solved this system analytically, then considered the stream function, did some steps, and plotted the streamline. It is different from the stream function, which has been obtained directly by using the numeric method. I have assigned the values to the parameters that I used during the analytical plot. I put x=0 and did not get the answer. Besides,  I am uploading the graph as a reference, which I have obtained by considering the stream function. This plot is similar to my flow direction, and I expect the same results from the numeric method.

streamline_Help.mw

dr := draw([Tr(t3), AP(cbl), BP(cbl), CP(cbl)]),
textplot([coordinates(A)[], "A"], [coordinates(B)[], "B"], [coordinates(C)[], "C"], align = {above, right});
Error, (in plots:-textplot) unexpected options: [[0, 0, "B"], [13, 0, "C"]]
Why the coordinates are unrecognized ? Thank you.

Hi! I'm trying to find out if i can construct a sequence f_n that generates all the (positive) rational numbers as n goes to .

This is, the sequence shows to be an injective homomorphism f_n: N -> Q₊ . This sequence was constructed by cantor in his proof of rationals being countably infinite, and can really be helpful in evaluating expressions using rational numbers, but i do not knoww if it is implemented in maple, or how to construct it myself. 

Any help would be very appreciated. 

The equal sign ":=" in my document sign has changed to a "d".  The equal sign "=" has not changed.  Is there a setting I need to change?

Thank you in advance.

Hello

I need to share some results with a colleague who is not a user of Maple, and a way to do this is by using the Tabulate (plain command and not from DocumentTools) function to format them. In the worksheet, the output looks good, but when I try to print it or save it as a PDF, only a few lines are printed. It appears that Maple is not able to break the tables into multiple pages for printing.

The output is a table with 77 rows and 30 columns.   

I welcome alternative solutions to the problem of displaying the results. 

Many thanks

I am trying to find the value of y4 at t=infinity and t=-infinity when lambda1>lambda2 or lambda1<lambda2. But every time I got the same answer. For example, if we do it by hand then the terms which are responsible for making the indeterminate form can be extracted and canceled (see Fig.). 

But in limit.mw y4 is too lengthy-expression and very difficult to do it manually.