sometimes, the maple server goes in a loop and runs full CPU. Waiting makes no difference. It just hanged. Even stopping the computation from the UI makes no difference (i.e. cliking on the "interrupt the current evaluation" button). Only way I found is go to task manager and terminate the mserver.exe by force.

The problem now is that I have to close Maple and start all over again. Since I can't start a new computation or do anything if the server is down.

I am just asking if there is a better way to do all this. For illustration, this int() command below hangs the server, so you can try the same thing I am seeing. This is on Maple 18.02, windows 7, 64 bit.

Make sure to save all your work before running this. This is just one example. I have many more where maple hangs like this (i.e. the interrupt does not terminate anything and the server keeps running)

y := 1;
z := 2 + x + y;
s := 1/2;
m2 := 5325;
m1 := 5279;
mz := 106055/10;

int1 =evalf(int(1/z^3 *(x + y + 2* x*y)* (1 + s^2/(2 *m2^2* z)) *exp(-(m2^2*x + m1^2*y)/s^2 + (mz^2 *(x + y + 2 *x*y))/(2* s^2* z)), x=0..1));

Surely this is a bug.

> 0^0;

                 1 

> sum( 0^m, m=0..infinity );

                 0

Hi experts

In a procedure with no declared parameteres I would like to return (print) the passed arguments (expecting Matrix structures) in a modified form along with the name of the symbol holding the structure passed as arguments.

That is, the procedure just iterates through the _passed arguments in a for-loop to display the name of the the passed argument (the symbol), a colon and then the modified matrix structure.

My problem is that when looping from i to _npassed arguments, refering to _passed[i] gives me the evaluated form.Tat is what I need to modify the structure but not to list the symbol name.

Say I wanted to print a transposed version of my passed matrices. Then I would call

M:=<<1,2>|<3,4>>;

myProc(M);

And the result I want would be

M: 

But I don't know if _passed holds the symbol names or just the evaluated versions of the passed arguments??

And theoretically the passed argument (assuming a matrix) could be the matrix structure put directly in the procedure call, in which case there is no symbol to refer to.

I hope you get my question and can help me out.

Thanks

Simon

So I'm having trouble using maple to find the relationship (formula) between two sets of data

I have time and current as t1, t2, t3...so on, and current.

Is there anyway to use maple to find it?

Hello

Please help solve this system

 restart; 
B:=1: 
q:=1*10^3: 
l:=1: 
n:=4.7: 
M_F:=z->2*q*l*(z-l)-q*z^2/2: 
M_1:=z->piecewise((z<l), 2*q*l*(z-l)+l-z-q*z^2/2, (z>l), 2*q*l*(z-l)+l-q*z^2/2-l): 
M_2:=z->2*q*l*(z-l)+2*l-z-q*z^2/2: 
one_int:=z->int(B*(M_F(z)+X_1*M_1(z)+X_2*M_2(z))^n*M_1(z),z=0..2*l); 
two_int:=z->int(B*(M_F(z)+X_1*M_1(z)+X_2*M_2(z))^n*M_2(z),z=0..2*l);
value(one_int(z)); 
value(two_int(z)); 
eqs1:={value(one_int(z))=0,value(two_int(z))=0}; 
fsolve(eqs1);

hello, i went solve these equation ,with a & b take any value

b*x*ln(x)-x*ln(a)+a=0

thank you

In this document, I think that is the relevent section. But I couldnt understand it.

I want something like this

>plot(sin(x),color=yellow);

>plot(sin(x),color=organe);

>plot(sin(x),color=red);

>plot(sin(x),color=green);

>plot(sin(x),color=ABC); # error

>plot(sin(x),color=CBA);# error

optional, but works fine within a given sets of choices.

How do I write a procedure like that?

Thanks!

st6.mw,st7.mwI want to obtain the analytical solution for this PDE by maple       . But I can not do it. Please help me

((d^2)T/dx^2)+ ((d^2)T/dy^2)+ ((d^2)T/dz^2)=-A*Q(x,y,z)

Where   0 <x<a ,  0 <y<b  ,  0 <z<l

With the boundary conditions:

(dT(0,y,z)/dx)=n-T(0,y,z)    (dT(a,y,z)/dx)=n-T(a,y,z)   (dT(x,0,z)/dy)=n-T(x,0,z)

(dT(x,b,z)/dy)=n-T(x,b,z)     (dT(x,y,0)/dz)=n-T(x,y,0)    (dT(x,y,l)/dz)=n-T(x,y,l)

where n is constant and A is set of parameters.

I am attempting to have Maple pull out the Eurocup qualifying scores from here http://www.uefa.com/uefaeuro/qualifiers/season=2016/matches/all/index.html

It doesn't seem to grab the full page.  Doing a search on Portugal only finds the one match against Albania.  Similarily a search on England only finds the match against Switzerland.  It seems to only find one instance and I'm not sure why it doesn't Get the full page. 

Any ideas?

I'm using the command

HTTP[Get]("http://www.uefa.com/uefaeuro/qualifiers/season=2016/matches/all/index.html")

I have updated  Maple from 18.01 to 18.02, but there is something strange happened to me. I can not use int anymore. Here is my codes:

restart;
int(sin(x),x);
Error, (in int) wrong number (or type) of arguments: invalid option value passed to indefinite integration: {}

kernelopts(version);
print(`output redirected...`); # input placeholder
    Maple 18.00, X86 64 LINUX, Feb 10 2014, Build ID 922027

Here is the screenshot:

we have number from 1 to 2014. If we underline the number that divide by 3 and 4, how many pattern of two underlines that next to each other as example?(1,2,3,4,5,6,7,8,9,10,...,2014).

Hi,

I`m using this program to find the largest prime factor:



Problem: If I insert largest_prime(p^n), where p is prime, it returns n. Which I dont want! I want p to be returned.

Please help me!

Hello all,

I have the following equation:

N*exp(-(1/2)*eta*epsilon*(N*alpha*epsilon*w+2*N*w*C[max]-alpha*epsilon*z-2*Q1*alpha)/(w*N))*S1*upsilon*w-N*S1*upsilon*w+K1^2*alpha*eta*z*epsilon+K1*alpha*eta*z*epsilon*S1 = 0

in which I need to find solution for epsilon (analytical solution) when epsilon>0.  

Thanks,

Dmitry

I have a nonlinear system with 4 equations and 4 unknowns. I am using fsolve. I know that there are multiple solutions for each variable but am only getting one. I need the others. what do I do??

This is my code:

R__1 := Matrix([[1, 0] , [0, 1] ]);

R__2 := Matrix([[1/2, sqrt(3)/2] , [-sqrt(3)/2, 1/2] ]);

R__3 := Matrix([[-1/2, sqrt(3)/2] , [-sqrt(3)/2, -1/2] ]);

R__4 := Matrix([[-1, 0] , [0, -1] ]);

R__5 := Matrix([[-1/2, -sqrt(3)/2] , [sqrt(3)/2, -1/2] ]);

d__1 := Vector( [ 0, 5.4] );

d__2 := Vector( [ 6.4, 4.539] );

d__3 := Vector( [ 11, 4.078] );

d__4 := Vector( [ 15.5, 2.079] );

d__5 := Vector( [ 19, 1.039] );

a := Vector( [ a__x, a__y] );

A__1:=R__1.a+d__1;

A__2:=R__2.a+d__2;

A__3:=R__3.a+d__3;

A__4:=R__4.a+d__4;

A__5:=R__5.a+d__5;

OO:=Vector([O__x,O__y]);

DA1:=A__2.A__2-A__1.A__1-2*(A__2-A__1).OO;

DA2:=A__3.A__3-A__1.A__1-2*(A__3-A__1).OO;

DA3:=A__4.A__4-A__1.A__1-2*(A__4-A__1).OO;

DA4:=A__5.A__5-A__1.A__1-2*(A__5-A__1).OO;

fsolve({DA1,DA2,DA3,DA4},{a__x,a__y,O__x,O__y});

Thanks for any tips you may be able to offer

How do I plot the following equations in Maple ?:

I already tried this: 

According to the given solution the plot should look like that: 

I think I have to tell maple that the function is defined from R^2 -> R, but I don't know how to do this. 

Thanks in advance for your kind help.