Hi, I solved a differential equation which is: ode := diff(y(x), x) = 2*(e1*m_b*sqrt(y(x))+m_b*psi+m_b*c1*(R0^2-y(x))); dsolve(ode); but the answer that I got is: x-Intat(1/(2*m_b*(e1*sqrt(_a)+psi+c1*R0^2-c1*_a)), _a = y(x))+_C1 = 0 How can I interpret this answer? Thank you,

Good Day Everyone,

My first question is with regards to sequence function in Maple. I have input into Maple the following

xp := map(z->z*[ft], [0.0, 3.3, 3.3, 0.0])

yp := map(z->z*[ft], [0.0, 0.0, -3.3, -3.3])

npile := nops(xp)

d := [seq(sqrt((xp[i] - xp[i + 1])^2 + (yp[i] - yp[i + 1])^2), i = 1..npile)]

I was getting an error message from Maple, "Error, invalid subscript selector", what have I done wrong in Maple?

 

V:=Vector([[0],[0.0003060109290],[0.0003327659830],[0.0003351052226],[0.0003353097460],[0.0003353276280],[0.0003353291916],[0.0003353293282]]);

 

I have this vector that shows my results converge. Is there any way to plot this that shows a curve that my results converge, I plotted using different ways but it still looks like a line not a curve

 

Can anyone give me a good example of MultiThreading in Maple  with(Threads):

I looked in the help files but I could not find anything good. The example should include a loop

which is running in the background while the user is doing other things simultaneously in Maple.

 

The loops could be using a time delay to slow it down

st := time[real](); while time[real]()-st < 5 do  end do ;

The output from each iteration should be displayed in a math container so we can see that it is working.

I wish to know if there is a maple command to extract the coefficient of a specific monomial in a polynomial. For example, if we have a polynomial f(x,y,z), how can we extract the coefficient of the monomial x^2yz^3 in f with a maple command?

Thank you in advance.

I am trying to import about 1400 data entries from a .txt file in a vector. The file contains three columns of data, and I need to export only one of them. I tried using readdata command, however I get an error; I might not be specifying the path of the file correctly. What is the right way to specify the filename path using readdata command on mac? Apart from readdata command, are there any other options? Thanks in advance, SDK

The following is strange. By acting on an equation label (in the Standard GUI) a subsequent global reference gets printed as if it were a module reference.

> restart:

> x:=ScientificConstants:-Constant(c);
                              x := Constant(c)

> ScientificConstants:-GetValue(x);
                                  299792458

> y:=:-Constant(hbar);
                             y := Constant(hbar)

> ScientificConstants:-GetValue(y...

Not all objects can be saved to .m and retrieved sucessfully in a restarted or new session. This is the case not only for "escaped" locals, but also for some objects implemented as function calls of a module member.

> restart:

> t := ScientificConstants:-Constant('c'):

> type(t, specfunc(anything,ScientificConstants:-Constant));
                                     true
 
> ScientificConstants:-GetValue(t...

Is there any function that we can get the row and column of a given component? What if there is several cases? e.g.

restart:
M:=Matrix([[1,2,3],[-4,5,0],[3,9,4]]);
max(M);

what is the coordinates of 9 which is the max in the matrix? What if we had another 9 somewhere else in the matrix?
 

I want to print a message in the results section with red color. How can I change the blue color JUST for that message. e.g.

print("The calculation was interrupted");

Hi all

I was just wondering if it was possible to add extra expressions to the expression palette?

/Simon

According to my experience so far, maple is stupid in image processing.

Frustrated with its functions.

For example, in plotting functions, only bmp, gif, jpeg is supported

while in image package, only jpeg, tif and bmp are supported.

So we take the intersection, only bmp and jpeg files can be used if i want to use plot and image packages at the same time.

If i want to do image processing on the file generated from the plot, like transparency stuff, it is not achievable!

And it totally doesnot support opacity!!

 

Hi, I have defined a function like b1_Func := (t) -> b[1]+t; The value of b[1] is being updated somewhere in the code, but I do not want this change in b[1] influences the initial definition of my function. i.e. I want to define it as initial value of b[1]. How can I do that? Moreover, in general, how can I define variables which must be calculated just once without any update? e.g. b:=x+1 and x is changing, but I don't want this change to influence the last calculated value of b Thank you,

Greetings all

I have an audio file that is 1 second long, but would like to create it
so that it will play the same signal 4000 times a second at cd quality (44100).  I can get the audio
file into maple 12 and squish it to .25 it's orginal size but I couldn't find a way to do a frequency shift so instead of creating a 1  
cycle signal it creates a file that has the orginal signal repeated 4000 times in 1 second.  Is this possible?

tia sal22

code I used.

with(AudioTools)

 

I have defined a function G, which has only one input parameter. I'm excuting following code.

sum(G(13-j), j = 0 .. 2)

with debug swiching on for 'sum' and 'G'. I got following error message:

-----------------------------------------------------------------------------------------------------------------------

{--> enter G, args = `+`(13, `-`(j))