Hi:

I am trying to use the Physics package to help me deal with non-commuting operators, but having some problems when trying to simplify expressions.The following should explain what i mean:

################

restart:
with(Physics):
# 'a' represents a quantum operator
Physics[Setup](noncommutativeprefix={a}, mathematicalnotation = true);

#we can try to expand to see that a and Dagger(a) do not commute!
expand((2*a+Dagger(a))^2);

Sorry if this is a well-known feature of Maple, but I haven't had much success searching for an answer.

Consider trying to separately solve each of the following two equations for x.

alpha * x + conjugate(alpha) * x = 1 

Maple 15 solves this equation to give x = 1/(alpha + conjugate(alpha)) , as expected.

alpha * x - conjugate(alpha) * x = 1

Maple 15 fails to solve this equation, returning nothing as if there is no solution.

This should be astonishingly simple as a MapleGraded question but it stubbornly refuses to agree with me.  Everything is marked incorrect ... one wishes for some feedback from MapleTA as to what is going on.

Student enters a vector.  The goal is to have the dot product with <5,3,1> to be whatever value is chosen for $p, which is in the $ANSWER field:

$m:=<5,3,1>;
$d:=LinearAlgebra:-DotProduct($m,$RESPONSE);
is(($d-$p)=0);

The Li function is defined in Maple as

> FunctionAdvisor(Li, definition)
               [Li(z) = Ei(ln(z)), with no restrictions on (z)]

Special values are known

> FunctionAdvisor(Li, special_values)
Warning: when function identities information is required, only one argument -
the function name - is expected. Extra arguments are being ignored.
          ...

How would you transform a 3D plot structure into a 2D plot structure? I have in mind 1) creating a 3D plot with odeplot or with plot3d, 2) selecting (say) 4 orientations, 3) transforming each into a 2D plot, 4) exporting the 2D plots using the Standard GUI.

The reason behind my question is that the best-looking exported plots that I have been able to obtain with Maple are 2D plots exported as postscript with the Standard GUI. 3D plots don't look nearly as good when...

I have been working on this for a while and Maple Support has been no help.

I have a series of unsimplified questions that I am solving for. I am trying to run it from 0 to 2*Pi and plot that against the value that is calculated for r3. it solves for opposites (positive and negative) and I only want the first set. From there I am unable to have the r3 value assigned as a value and then used for the calculation of r3a (which is just the array name).

here is my code and the errors that occur

I get an error:

/usr/bin/ld: warning: libmaple.so, needed by /usr/local/bin/maple15/bin.IBM_INTEL_LINUX/libmaplec.so, not found (try using -rpath or -rpath-link)
/usr/local/bin/maple15/bin.IBM_INTEL_LINUX/libmaplec.so: undefined reference to `extStartMaple@VERS_1.1'
collect2: ld returned 1 exit status

Even if I try to explicitly add all the maple libs, something goes wrong:

gcc simple.c -I/usr/local/bin/maple15/extern/include ...

Hi there,

I'm trying to do a BodePlot of a transfer function for a Buck Converter. So I assign values for R, C and L, but when I try to run the Bodeplot function from the DynamicSystems package I get a:

"Error, (in DynamicSystems:-evalfSystem) symbolic value(s) in model: sCR, sL"

What can I do to fix this?

Hi,

I have to solve a very complex trigonometric equation which has 0,1 or 2 solutions between 0 and Pi (it depends from some parameters...).

The first problem I solved is to find the two solutions (when they exist), because at the beginning, the fsolve function returned only one solution. So, reading in your site, I solved this problem "splitting" che solutions domain in two parts in which I expect to find the two different solutions.

So for example a I wrote:

Three things - one being an possible business opportunity (albeit a small one) for Maplesoft ... ps. sorry for the lengthy talk

updates - Under the Table of Contents in the help Browser I can go to System -> Information -> Updates and find the What's New updates in all versions up to and including the one you're using.  Then at the bottom there are links to further explicit updates to which there are no links in the searchable browser (at least that I could...

Some years ago (on the old primes when there was a 'book' section), I had posted about Maple 401, a list of advanced functionality that someone serious about writing code in Maple ought to know.  But that list is not particularly current (it probably was not completely current when I created it), as I did not keep up my in-depth knowledge of more recent releases of Maple.  So my question is: what is this list

Hi everybody,

I have just started to learn using maple and now I have a trouble.

I thought programming was similar to C language, and I tried to write this simple code:

> restart:
> a := 2;

   b := 5;
> 
> for i from 1 by 1 to 4 do

   if a = b then 

        print('before'); 

        plot(x^2, x = -2 .. 2); 

        print('later')

   end if; 

Greetings All

I have several equations and each have their own individual frequencies and amplitudes. I would like to sum the equations together and adjust ONLY the individual phases, phase1,phase2, and phase3 to keep the total amplitude value of eq_total under a specific value like 0.8. I know I can normalize the signal or change the vertical offset, but for my purposes I need to have the amplitude controlled by changing/finding the values for just...

Hi everybody, I have a rather large code in Maple for my research which needs fast eigensolving for large sparse matrices, thus, I am using the Matlab link to parse my matrices and get them eigensolved in Matlab. The problem is that, I am unable to directly parse a Maple sparse matrix to a Matlab sparse matrix which substantially slows down the calculation.

This is the best I can do so far:

> H:=Matrix(5000,5000,shape=symmetric,storage=sparse,datatype=float[8]):

i want to use the new point's (c) coordinates but how can i correct this? thank you for helps.

a:=point([1,0,0],color=red,thickness=6):

c:=animate([rotate[a,alpha,[[0,0,0],[px,py,pz]]]],g2=0..2*Pi):

cx,cy,cz:=animate([op[c][]],g2=0..2*Pi):                                                                                                                                        

Error, cannot split rhs for multiple assignment