is there a command line method for exporting plots as jpg files and gif files?

How do I create a wave in Maple such that the end which the wave hits of (fixed boundary condition) is formed of triangles rather than just a straight line. I have, 

with(plots):

animate(plot3d,[sin(Pi*(t-x))sin(Piy)Heaviside(t-x)-sin(Pi(t+x))sin(Piy)*Heaviside(t+x),x=0..4,y=0..1],t=-2*Pi..2*Pi);

Would I have to create a whole new formula or can I just add something to the code to give this different boundary? Or maybe I can use a different software other than maple, I just want to know which directions the waves will travel when they hit a ridged surface.

Say I wanted to create a five sides polygon, so the wave hits these two boundary conditions so i can see what happens next. (I added the two black lines in paint so it was easier to visualise)

How to translate the elliptic curve from the 4th to the 3rd curve with maple?

thanks.

Hi, I am using fsolve to find the roots x of a nonpolynomial expression f(x,a) = 0, using a loop for do to vary the values of the parameter a in small identical steps. At some stage, fsolve cannot find a solution. According to the Maple help, in this case fsolve returns a NULL sequence. I would like to know how to use the fact that fsolve cannot find a solution to break the loop with an if-then statement. 

How can plot  f := proc (x, y) options operator, arrow; sin(x)*cos(y) end proc

as surface and contour (contour is project on xy plan)

HOW I can find the function that satisfies these boundary conditions?

please help me.

Thanks

FUNCTION.mw

Download FUNCTION.mw

Hello!

I am trying to find a minimizer for the functional E (see Maple code), where u is in L2([0,rmax]) (Constraint) and u is approximated by a finite set of fourier coefficients in the basis {n*exp(ikx)}.

I don't have much expirience with maple so I could use some help solving this.

The codes I tried either show an erroer( unexpected parameters) or run a very long time until I interupt.

Do I have something wrong or can I reformulate the problem?

Thank you!

Kainmuth

Minimizetest2.mw
 

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Is there any way to get random numbers in Maple with the Sobol method?

Thank you.

How to make Maple determine whether the following is a sequence with a rule behind it or just random fractions:

3^893/2^1415, 3^1040/2^1648, 3^2192/2^3474, 3^3776/2^5984, 3^3910/2^6197, 3^5514/2^8739

equation of ellipse

eqn := (1/32)*(x-16)^2+(1/2025)*(y+0)^2 = 1

only interested in the positive section

plots[implicitplot]([(1/32)*(x-16)^2+(1/2025)*(y+0)^2 = 1], x = 0 .. 18, y = 0 .. 60, scaling = constrained)

equation for arch length of function

int(sqrt(1+(diff(eqn, x))^2), x = 0 .. 16)

Doesn't seem like the best way to solve this.

Wanting to generate a general fomula I can then use in excel to calculate the arch length of the positive only section of the ellipse

any ideas of what the assumptions could be to have maple solve this?

eqn2 := (x-h)^2/a^2+(y-k)^2/b^2 = 1;
                               2          2    
                        (x - h)    (y - k)     
                eqn2 := -------- + -------- = 1
                            2          2       
                           a          b        
                             "(->)"

     [[                                            (1/2)]  
     [[          / 2  2    2  2      2        2  2\     ]  
     [[    a k + \a  b  - b  h  + 2 b  h x - b  x /     ]  
     [[y = ---------------------------------------------], 
     [[                          a                      ]  

       [                                            (1/2)]]
       [          / 2  2    2  2      2        2  2\     ]]
       [    a k - \a  b  - b  h  + 2 b  h x - b  x /     ]]
       [y = ---------------------------------------------]]
       [                          a                      ]]

eqn3 := (a*k+sqrt(a^2*b^2-b^2*h^2+2*b^2*h*x-b^2*x^2))/a;
                                                     (1/2)
                   / 2  2    2  2      2        2  2\     
             a k + \a  b  - b  h  + 2 b  h x - b  x /     
     eqn3 := ---------------------------------------------
                                   a                      
diff(eqn3, x);
                           2        2                
                        2 b  h - 2 b  x              
          -------------------------------------------
                                              (1/2)  
            / 2  2    2  2      2        2  2\       
          2 \a  b  - b  h  + 2 b  h x - b  x /      a
`assuming`([int(sqrt(1+(diff(eqn3, x))^2), x = c .. d)], [a > 0, b > 0, c >= 0, d > c]);
 

Hi, I would like to plot multiple curves with arrows pointed at each curve. I don't know how to plot the arrows with values. A similar figure is attached. Thanks for helping . . .

Hello, I want to export several excel files using a loop to

matrixMY: = Matrix (0 .. 5, 0 .. 1);
d: = 0;
with (ExcelTools);
for h from 1 to 10 do:
Export (matrixMY, "d: \ myfiles [h] .xls", "Payroll", "B2");
matrixMY [d, 1]: = h;
end do:

But this does not work well.

Regards.

As the title suggests, that is what one of my current "fool around" projects requires. I have tried to do this using the HTTP package together with the StringTools package, and had mixed results, the main issue being is that in performing the HTTP Get request it  returns an error code unless i constantly import valid "spam" from my clipboard from an external internet brower. 

I will keep working on the way i forsee this being possible, and dont ask why a want to do this from a command line approach rather than just using a search engine, yes i have a good reason for this. If you have done this before, id appreciate the help as it will enable me to improve my life quite a bit.

Ok this is an extract from the help page, i have no idea what this means nor how a procedural function that orders a finite list of objects in a certain way could possibly be described as "non deterministic", so i really really need someone to help me here please, most confusing part is in bold:

sort(L, F)
 

If F is the symbol address, then the elements are sorted by address (a non-deterministic run-time specific property of the underlying data structure)
 

Download Find_anorm.mw