Hi:

I am having trouble with the Physics[diff] operator.

restart:
with(Physics):

#Setup noncommutative operators:
Setup(noncommutativeprefix = {P, H, rho});
              [noncommutativeprefix = {H, P, rho}]

#this works:
diff(P(t),t);
                    
#even more complicated stuff works:

I am right now attempting to install Maple16, and somewhere in the installation process the following appears to be happening: "installing... THBI_____.ttf". This something then proceeds to be installed for more than half an hour, at which point I stopped the installation process. Is this supposed to take super long or might something be wrong here? 

An example:

evalf(frac(10^2*exp(1)));

0.8281828

Two digits lost.

And here is even worse:

evalf(frac(10^9*exp(1)));

0.

Correct unswer:

evalf[20](frac(10^9*exp(1)));

0.4590452354

The correct answer

Many many thanks for your help. I want to learn about why op[1,1] returns only the first operator (which itself has two operators as summands). Also please point me the link for convert on float values.

I wish to use an array of the size 3000x1000 inorder to calaculate electric fields. Can Maple support such large matrices? The calculations involved in the simulation are of algebraic nature like, addition, subtraction and division.

Is Matlab better in this case?

Basically I am trying to generate equipotential lines abd electric field plot from a given distribution of electric potential.

I provide a code that I tried to optimize (minimize the calculation time) several times, finally I succeeded to:

######   Define global variables 
DGV:=proc() 
 global CI0P,CI1P,CK0P,CK1P,CK0G,CK1G; 

 CI0P:=Array([1,6.25,9.765625,6.781684,2.6490953,0.66227383,0.1149781,0.014665573,0.0014321849,0.11050809e-3,0.69067559e-5,0.35675392e-6,0.

Not sure what (in DNS/RunSimulation) means but it preceeds my "simulation failed, an error occurred" note.

Hi guys, can someone tell me how I can get a numerical answer to the following question:

>with(inttrans):

>invlaplace (15/(s³ + 6s² + 15s + 15), s, t)

The answer I receive from entering the above commands is not the numerical answer. I know that the answer should contain sines/cosines/exponentials - how do I get that?

thx

Hi,

I'm relatively new to Maple and was wondering if there was a way to use a do loop to plot a succession of graphs with different colors and legends.
So far I have

for C to 7 do
S := 'S';
S := .7+.1*C;
p || C := plot(R[123], lambda = 5 .. 25, y = 0 .. 1, legend = "S=0.7+(0.1*C)")
end do ;

display(p1,p2,p3,p4,p5,p6,p7);

But I can't figure out how to actually get the legend to update or to assign a new color to each line.

Could you tell me how to build a maplet in Maple 16

In geom3d, how do i choose the coordinates of the vertices A, B, C of the triangle ABC so that perimeter of  triangle ABC is an integer? Please help me.

What is the differences between Maple and Matlab? Which should I use?

What is the lastest version of Maple and Matlab ?

How do I look for a 9 digit pi-sequence within decimal places of the EULER e  and find the position of that string.

2,71828182..............314159265..........

      123.....................x

can someone show me screen shot how to do this??

thanks so much

Horst

I'm new user in maple programming and I trying to constuct a for loop but I taken this Error on my program! here is my program:

This is a follow-up question to my last-name evaluation question a few days ago.

Well, I thought I had got it, but look at this trivial example involving records:

r:=Record(p1=parm1,p2=parm2);

r:-p2;

         parm2

parm2:=0;

r:-p2;

        0

eval(r);