1. Sorry the question is not a maple product but just wanted to know if anyone was using the sharp equation calculator with a pc link interface as it is not with a very acceptable web presence and the kit is unaffordable. If Maple has an equivalent I would love to know.

2. Does Maple have a facility for using virtual drives and emulators on a portable basis (non cloud)?

Hi Math People,

I can't find an answer if it is possible to insert slider or any other component into document, adjust its value by sliding it and execute all following calculations in the document below the slider, those which depends on the value of slider parameter?

I know this is possible in graphs, or explore command, but could it be simply setting some value let's say "a". Lets set its value by slider and when slider is set, code should automatically update document? This part of code of slider "Action When Value changes"

Or am I expecting too much?

Best regards

Marcin

how to write the elements of the triangle of Pascal so that all 1 are aligned on a same vertical. Thank you.

this is my model. Please give me how to find the DFE and basic reproduction number from maple.

I am a little overwhelmed by the possibilities of ColorTools.
Is there a graphical overview of implemented palettes side by side?

please help me to fixed and find the analytic solution...

Download cobacoba.mw

f := x -> 2*x/(x + 3)

p1 := plot(f(x), x = 0 .. 100);

p2 := with(plots);
inequal(58 < x, x = 0 .. 100, y = 0 .. 2);

display([p1, p2]);

Error, (in plots:-display) expecting plot structures but received:

How do i combine to p1 and p2 in the same graph. They print well individually..  Its maple 2021

Hello

I could not come up with a better title, so I apologize for that.  Let me explain what I am trying to implement using an example. 

Consider the following list of monomials (a 3D model,  4 monomials altogether):

model := [x^2*y*alpha[1, 11], x*z^2*alpha[2, 15], y^2*z*alpha[3, 17] + y*z*alpha[3, 8]]

The idea is to generate the set of all models by adding a non-repetitive monomial from the following list to model.

[alpha[i, 0], alpha[i, 1]*x, alpha[i, 2]*y, alpha[i, 3]*z, alpha[i, 4]*x^2, alpha[i, 5]*y*x, alpha[i, 6]*z*x, alpha[i, 7]*y^2, alpha[i, 8]*z*y, alpha[i, 9]*z^2, alpha[i, 10]*x^3, alpha[i, 11]*y*x^2, alpha[i, 12]*z*x^2, alpha[i, 13]*y^2*x, alpha[i, 14]*z*y*x, alpha[i, 15]*z^2*x, alpha[i, 16]*y^3, alpha[i, 17]*z*y^2, alpha[i, 18]*z^2*y, alpha[i, 19]*z^3]

where i indicates the coordinate where the monomial will be included.  Example: if alpha[i, 2]*y is to be added to the second coordinate of model it goes as alpha[2,2]*y. Note that alpha[i, 15]*z^2*x cannot be added to coordinate 2 since it is already there.  

The result will be a list of 56 models with 5 monomials. 

How can I do that efficiently?  

Many thanks

Ed.

PS. I have implemented something similar to the problem above, but I have used too many 'for' loops. 

To Scan Math with the Maple Calculator and show solution steps in Maple:

1. first scan some math with the calculator (right-clik on any image below and open in a new tab to see it larger)

2. Maple calculator immediately shows the solution if that is what you are looking for:

3. Calculator gives options to show the solution steps in the calculator itself ( footprint button in top-right) 

4. Or to upload the math to the MapleCloud (cloud icon with up arrow)

5. Once the math is uploaded, MapleCloud can be loaded on a desktop computer and the file opened from your account's Maple Calculator group of files:

6. Again, the solution and some more details are visible on Maple Cloud:

7. To open this math in Maple, click the blue button to Download the file.

The downloaded file can then be loaded in Maple:

8. The Maple commands to solve this math are shown, and the result. 

To show steps in Maple at this point, convert the math to inert form, then run the Student:-Calculus1:-ShowSolution() command on it:

Download MapleCalculatorMathCloudUpload.mw

I have a result:

u1 = RootOf(4*_Z^2 + (4*RootOf(60*_Z^3 - 60*_Z^2 + 15*_Z - 1) - 4)*_Z + 4*RootOf(60*_Z^3 - 60*_Z^2 + 15*_Z - 1)^2 - 4*RootOf(60*_Z^3 - 60*_Z^2 + 15*_Z - 1) + 1)

I tried: convert(u1,'radical');

but it reported error Error, (in sprintf) too many levels of recursion

how can I convert it to this form?

Thanks!!

There appears to be a bug with Maple 2023.2 which will remove units from physical constants.

AddConstant(Solar_equatorial_radius, symbol = r[e,Sol], value = 696342., uncertainty = 65., units = km) :

AddConstant(Solar_flattening, symbol = f[Sol], value = 0.000009) :

AddConstant(Solar_polar_radius, symbol = r[p,Sol], derive = -r[e,Sol]*(f[Sol] - 1)) :

AddConstant(Solar_nonradius, symbol = x[Sol], derive = f[Sol]*r[e,Sol]) :

In the example here, "GetUnit(Constant(r[p,Sol]))" will return "1" and "GetUnit(Constant(x[Sol]))" will return "m".

The only workaround is to not save dimensionless quantities as physical constants or otherwise at least some constants derived from a dimensionless constant will also be dimensionless.

Adding "units = 1" to "AddConstant" does not help.

Hello! We are using Maple to evaluate numerically expressions with very high precision and we are finding very strange results. After some playing with simple models we have come to conclusion that there might be a bug in Maple 2023. Here is a clean example of what we are experiencing. Plotting the function x*exp(-x) in [0,20]. Clearly the function cannot be negative in that interval! However, if Digits is set to 40 the results may be whatever. Any ideas? Thank you very much. 

Trying to figure out how to save a slice of an array to a repository.

for example: savelib(vmcofs[1],lib) [where lib is my repository location]

I'm getting the error: Error, invalid input: savelib expects its 1st argument, to be of type symbol, but received vmcofs[1]

Quoting it doesn't seem to help.

I need to do this programmatically as I will be incremented the row number in the array and saving partial data at each step.

That is...savelib(vmcofs[1],lib) then savelib(vmcofs[2],lib), etc.

I can save the whole array. Is there a more efficient way of doing this?

Hello everyone!

I'm using Maple 18. The problem is that fsolve does not solve equations, or more precisely, it does not pass the values of sU - from its range, and sV - from its range, to shootNL. As a result, R value:=[]; . I would like to ask for help in solving this problem.

I have attached the Maple source file.

fsolveProblem.mw

I want to plot a graph of sets of o d e for a disease model with varying perimeters please how do I get the plot functions and how should the graphs look like for each parameter I vary