I wrote a procedure that solves an optimal control problem governed by volterra integral equation. This procedure  takes N , number of lagrange interpolating polynomials, as parameter and call NLPSolve function .the problem is: for N>10 maple displays this Error: Error, (in Optimization:-NLPSolve) object too large. How can I fix this problem?

here is my procedure:

Hi! I need some help with a curve I'm trying to plot.

I'm asked to intersect the surface produced by f(x,y) with the plane z=1/4 and to plot the curve generated by the intersection (in 3D). I found how the curve looks like but I don´t know how to plot that in 3D.

hi

I want to have a fprint command which should given me the data in two columns.

I want to modifiy the following command

fprintf(fd,"%f \n",li,sigmai);

this command gives me data in horizental form, i.e.,

0.001000 0.300990 0.600980 0.900970 1.200960 1.500950 1.800940  2.100930

But i want it in the follwoing form

 li              sigma

0.001000 0.300990

 0.600980 0.900970

Hello

I Just shifted to Maple from TI-Interactive and i'd like to know if i can make equations and formulars without output and still using maples attributes such as when i divide stuff and it automaticly puts one under the other.

I TI-interactive i used the inser --> object and then chose the Microsoft Equation 3.0 for making equations where i write the output.

Is there a command to change differential equation into difference equation?

For i=1 I need to calculate the variables  t12[i], t13[i] ... and t18[i], then to  calculate Cn(i,n)=F(t12[i], t13[i] ... and t18[i]) as n increase from 1 to 15 and then to increase i and calculate all these  variabels another time and this will continue to i=5.

How to make the nested loop for this example?

Thank you ,

Tanya

i set up maple 14 on win 7 64 bit,  maple 14  opens but codes don't  work. how can i solve this problem? 

I am interested to know how the find the maximum value in a function of f(x,t) over an interval {x=a..b, t=c..d}. I have searched this forum and the web and can not find anything to do it.

I have plotted the function and can visually see the maximum, however, although I have tried many methods I can not calculate the maximum value.

Any assistance would be appreciated. If possible, I would also like to calculate the mean and minimum value for the function.

Hello All,

How may I have Maple accept and output J, rather than I, for imaginary numbers?

Thanks,

Dave

Hello All,

Are there keyboard shortcuts for pi and e? It's quite inconvenient to pull these from "Common Symbols". Thanks!

Regards,

Dave

Hi,

I am trying to solve the following system of ODE's given some initial and final conditions.

When an existing .mw file is opened in Maple 15 (i.e. by double clicking the file in Windows Explorer), a new document is always opened automatically alongside the existing file, and a "Startup" dialog pops up asking the user to select "Document" or "Worksheet" mode. I think this is annoying because each time the user needs to close the dialog to get to his/her .mw file.

This behavior did not occur in Maple 14 and I don't understand the reason for this change. Can we go back to the previous behavior?

For the following system:

x1 := M*(cos(phi)-a*cos(phi)) / (1-b*cos(2*phi))

x2 := M*(cos(phi)+a*sin(phi)) / (1+b*sin(2*phi))

y1 := M*(sin(phi)+a*sin(phi)) / (1-b*cos(2*phi))

y2 := M*(sin(phi)+a*cos(phi))/ (1+b*sin(2*phi))

I'm solving for M(x1,x2,y1,y2), eliminating a, b, and phi. 

I've tried

solve({x1=X1, x2=X2, y1=Y1, y2=Y2},{M,a,b,phi},AllSolutions);

and

sol := eliminate({x1 = X1, x2 = X2, y1 = Y1, y2 = Y2}, {M, a, b, phi});

int(int(int(max(x^2,y^2,z^2),x=-1..1),y=-1..1),z=-1..1) with Maple?  The same question in higher dimensions.