f1 = u1*f1 + u2*f2

f2 = u3*f1 + u4*f2

1. obviously u1 = 1 and u2 = 0 is solution, would like to see an exmaple which exist other solution?

2.

can it be seen as an matrix question such that matrix A := [u1, u2; u3, u4;];

or i should see them separately f1 = u1*f1 + u2*f2 and f2 = u3*f1 + u4*f2 ?

which Maple function calculate this?

3.

if want to determine whether [g1, g2] is member of [f1, f2], u1 = 1 and u2 = 0 can not be solution?...

I have a very strange bug with Maple 16. When I try to start it, Maple loads its shell and starts to consume 100% CPU (maple.exe, not mserver.exe). If I try to calculate something, it throws something like "waiting for server connection". In 3 to 10 minutes Maple suddenly stops doing this and then works normally until I reboot Windows. What's this? Maple 16.0, Windows XP SP3.

PS. I do not have such bugs on my home PC with Windows XP SP2.

hi all,

> e0 := -21+.7*I;
                          -21. + 0.7 I
> e2 := e0;
                          -21. + 0.7 I
> e1 := 3.9;
                              3.9
> e3 := 1;
                               1
> t1 := 10*10^(-9);
                               1    
                           ---------
                           100000000
> t2 := 50*10^(-9);
                               1    
                            --------

I am simply trying to plot three different for loops. 

> a[0] := 100;
> r := 2;
> for n to 10 do a[n] := r a[n-1]) end do;

> b[0] := 100;
> r := .5;                            
> for n to 10 do b[n] := r b[n-1]) end do;

> c[0] := 100;
> r := -1;
> for n to 10 do c[n] := r c[n-1]) end do;

The loops are calculating...

Hi,

I need fsolve to round down its solutions but the 'Rounding" operator doesnt work . Here's a simple example

restart;
Digits:=5:
Rounding=-infinity:
fsolve(sin(x)=0, x=2..4);

The answer is 3.1416 but I need it to return 3.1415. There also doesnt seem to be a command to obtain the nth digit of a number, aka. digit(3, 3.14) = 4 in case I wanted to write a quick procedure to round down the answer.

Any suggestions?

Thanks,

i'm using DirectSearch package to solve the following system of equations (in order to find x1a,x1c,x2a,x2c):

How can i limit the solutions just for positive values of x1a,x2a,x1c,x2c? (Currently, I'm just using  

Thanks

Gil

Hi,

     So I'm trying to animate a ball moving around in a moving circle. I can do a sequence of points, and a sequence of static circles which works okay but I'd like a continuous animation. Here is the points where the ball hits the circle (x,y) position and the times (t).  and the animation of the circle

restart;
with(plots);

x1 := [.9, -0.6953537244e-1, .5084436548, .5084436548, -.5253004431, -.4186356935,
     -.8180728424, -.8180728424,...

How can I get the correct multiset power set of a hashmset in Maple? For example for the following hasmset s I have two different answers in Maple and MuPad. I need to compute MuPad like answer in Maple:

>s := hashmset:-new( [ a, 4 ], [ c,3 ] );
                  s := table(sparse, [a = 4, c = 3])

> combinat:-powerset(entries(s));

     ...

Hi, I use Maple 13 and have this issue to solve.

In an archive.txt there is the following Vector:

-1/64*cosdincl^2*cos(2*ele-2*g-2*anom-2*w)
+1/16*sinfJ*cosfK*sindincl*cos(2*ele+g-h+om-2*anom-2*w)
-1/16*sinfJ*sinfK*cosdincl*cos(2*ele-g-2*h+2*om-2*anom-2*w)
+1/16*sinfJ*cosfK*sindincl*cos(2*ele-g-h+om-2*anom-2*w)
-1/16*sinfJ*sinfK*cosdincl*cos(2*ele-g+2*h-2*om-2*anom-2*w)
+1/16*sinfJ*cosfK*sindincl*cos(2*ele-g+h-om-2*anom-2*w)
+1/128*cos(2*ele+2*g-2*h+2*om-2*anom-2*w)

If there is a regression in an update it should be fixed within the same version and not left as an open bug in current versions.

Since 16.01 update is no longer available and 16.02 is the only option.  It would be very much appreciated by the mapleprimes community and maple users to see a 16.03 update.

Hello,

I work at a University and we use Maple 9.5, 13, and 16.  We have had problems with 13 and 16.  In this instance the program gets stuck at

for k from -N to N do
  e[k]:=g[k]/L2norm(g[k])
end do;

We left it run for 24 hours but it will not calculate e7. The program doesn't freeze but just seems to be in an endless loop. I have tried on multiple computers with different RAM/CPU configurations.

In Maple 9.5 this program...

http://wenku.baidu.com/view/7d013c8c680203d8ce2f24ee.html

 goal is to evalute to (5.10)

restart;
with(inttrans):
with(SumTools):
r := sqrt(2*p)*exp(p*t)/(i-1)!*Diff((t^(i-1))*exp(-2*p*t),t$(i-1));
L := laplace(r,t,s);
L := int(r*exp(-s*t), t=0..infinity);

no matter laplace it or integrate it, also failed

http://en.wikipedia.org/wiki/Laguerre_polynomials

http://wenku.baidu.com/view/7d013c8c680203d8ce2f24ee.html  

how to evaluate to equation (5.9) in page 195 from rodrigues formula?

rodrigues := exp(x)*(x^alpha)/n!*Diff(exp(-x)*(x^(n+alpha)), x$n);
rodrigues := subs(x=2*p, rodrigues);
rodrigues := subs(alpha=1/2, rodrigues);

i want to plot a streamlines for the functions 

psi=2y-exp(-x):

for different values of psi=0,1,2,3 and x=0 to 1 i want plot stream lines 

Dear Friends.   I solve a group of linear equations and the memory is not enough and i can't 

adding a new hardware to the computer.

i increase the virtual memory of the computer from some chose for the operating system 

but it seem to me the Maple use the memory from the hardware only.

I want to know is there any method to  make the Maple using the virtual memory for 

the computer

Amr