MaplePrimes - Questions and Posts tagged with error

how to get rid of "unable to match delimiters" error message?

Aozlex — Fri, 18 May 2012 02:54:33 Z

here is the code that shows the error message

are there anyone can help me a little bit and check it why?

why this error happen and disappear in a same Proc?

ZhuWeihong — Wed, 16 May 2012 07:44:53 Z

this error message hapened,but i try process agin ,this erro disappeared, the proce is perfect, but then it appear agin. is this a bug? i use maple 16.

> restart;
> with(plots);
> with(DEtools);
> pendulums := proc (L, angle, velocity, a, b, n) local i, deq, X, Y, inits, slnnf, ACF1, ACF2, ACF3, ACF4; deq := L*(diff(theta(t), `$`(t, 2)))+(diff(X(t), `$`(t, 2)))*cos(theta(t))+(diff(Y(t), `$`(t, 2))+9.81)*sin(theta(t)) = 0; inits := {theta(0...

Problem in DEplot

mah00 — Sun, 29 Apr 2012 21:36:41 Z

Hi everyone,

I have a problem with DEplot.

Here is the code:

restart;with(DEtools), with(plots), with(linalg):

z:=exp(I*((t/(2*Pi))+(2*Pi*j/3)));

f1:=Re((I/(2*Pi))((1/(subs(j=1,z)-(x(t)+I*y(t))))+(1/(subs(j=2,z)-(x(t)+I*y(t))))+(1/(subs(j=3,z)-(x(t)+I*y(t))))));

g1:=-1*Im((I/(2*Pi))((1/(subs(j=1,z)-(x(t)+I*y(t))))+(1/(subs(j=2,z)-(x(t)+I*y(t))))+(1/(subs(j=3,z)-(x(t)+I*y(t))))));

sys1:=[diff(x(t),t)=f1,diff(y(t),t)=g1]:

How to deal with: "Error, (in content/polynom) general case of floats not handled"?

Manu — Mon, 23 Apr 2012 21:54:53 Z

Dear All,

I am trying to find (complex) eigenvalues and eigenvectors of a matrix as a function of a variable. Using the following commands lead to the respective errors:

- LinearAlgebra[Eigenvalues](A): Error, (in content/polynom) general case of floats not handled

- LinearAlgebra[Eigenvectors](A): Error, (in LA_Main:-Eigenvectors) cannot determine if this expression is true or false: 0.2480392156e-4*abs...

the bug with maple 14

jacobian — Sat, 14 Apr 2012 13:12:42 Z

In Maple 14

with(epsilon); > f:=[(x-u)^2+(y-v)^2-1,v^2-u^3,2*v*(x-u)+3*u^2*(y-v),(3*w*u^2-1)*(2*w*v-1)]; > printlevel:=2:

[CharSet, ICS, IVD, PID, Prove, RIM, RegSer, SimSer, TriSer, Tsolve,

dTriSer]

...

How do I solve recursive assignment?

docoi — Sun, 01 Apr 2012 16:39:41 Z

I have to solve the following set of equations. But it allways appears the Error "recursive assignment". Has somebody a solution for me? Is there a Problem with the Equations?

DGL1 := m[1]*(D(D(x[1])))(t)+d[1]*((D(x[1]))(t)-(D(x[2]))(t))+c[1]*(x[1](t)-x[2](t))+e^(-0.4e-1*t)*sin(t)+1.5 = 0;
DGL2 := m[2]*(D(D(x[2])))(t)+d[2]*(D(x[2]))(t)+d[1]*(DF[4]-(D(x[2]))(t))+c[2]*(x[2](t)+x[f])+c[1]*(F[4]-x[2](t)) = 0;

init := (D(x[1]))(0) = 0, x[1](0) = 1.5, x[2](0) = 5;

"Too many level of recursion" Error

mah00 — Fri, 30 Mar 2012 16:44:20 Z

Hi everyone,

Working on my project, I have this error "Error, (in VectorCalculus:--) too many levels of recursion".

The project is about filetring a stochastic process.

When I want to calculate one of the integrals, I have that error.

Here is the code:

Rxi:=sqrt(d)*IdentityMatrix(4):

xi:=WienerProcess(Rxi);

Reta:=sqrt(d)*IdentityMatrix(2):
eta:=Array([WienerProcess(Reta...

need help with my code please

allen — Thu, 29 Mar 2012 21:11:24 Z

i have a procedure like this

> palindrome:=proc(n)

option cache;

uses ST = StringTools;

if length(n) :: even or odd

and modp(n,11) <> 0 then

return false;

else

return ST :- IsPalindrome(convert(n,'string'));

end if;

end proc;

> palindrome("mom");

error, (in palindrome...

Internal representation of vectors has a bug?

SanctumZero — Mon, 26 Mar 2012 14:26:39 Z

Hi
I run Maple 15 on an Acer laptop with Windows 7 and have the following problem:

When my Maple documents become "too" long, some of the vectors I have created seem to become tables instead (without me doing anything) rendering vector multiplications and additions/subtractions impossible (they'll throw an error; something like it not being possible to multiply a vector and a table. As if one of the vectors in my multiplication has become a table). Should it...

Some source program can't be runned because of "> " in maple15. Why?

ytyyutianyun — Fri, 23 Mar 2012 09:27:29 Z

Like this! Some error. How to do it

[IMG]http://i730.photobucket.com/albums/ww309/ytyyutianyun/Capture-6.png[/IMG]

How do I solve the following system of equations?

KateXX — Wed, 21 Mar 2012 12:01:03 Z

Hello,

Could you please help me with the following system of equations:

> restart; with(student);
> Z[0] = 377;
> solve({Z = 1/(j*w*C[1]+1/(j*w*L[1])+1/R)+1/(j*w*C[2]+1/(j*w*L[2])), C[1] = w[c]*(w[0]^2-w[c]^2)*(w[2]^2-w[1]^2)/(2*Z[0]*(w[1]^2-w[c]^2)*(w[0]^2-w[1]^2)), C[2] = w[c]*(w[0]^2-w[c]^2)*(w[2]^2-w[1]^2)/(2*Z[0]*(w[1]^2-w[c]^2)*(w[2]^2-w[c]^2)*(w[2]^2-w[0]^2)), L[1] = 1/(w[1]^2*C[1]), L[2] = 1/(w[2]^2*C[2]), R[1] = subs(w = w[1], 2*Z[0]*(1-S[21...

Problems with Optimization

Colin6919 — Wed, 14 Mar 2012 20:49:18 Z

Hey Guys,

I'm new to Maple and am having problems two problems. The first is I can not get anything to show up on my plot and the second is I'm getting a erorr of "Error, (in fsolve) Can't handle expressions with typed procedures". The code can be seen below;

Dsolve Error For First Order ODE

andrewfortune — Sat, 10 Mar 2012 13:47:27 Z

Hi,

Can someone please tell me why I am getting this error (in bold):

> ODE := diff(y(x), x)+3*y(x) = x^2

> ics := y(0) = 1

> dsolve({ode,ics})

Error, (in dsolve) not an ODE system with respect to the unknowns {y(0)}

How do i fix an error message that says "error in plot"?

mlebl874 — Sun, 04 Mar 2012 23:20:43 Z

I am unable to find where the problem is within a plot. Here is the error message: Error, (in plot) incorrect first argument [(k-1)*r*(cos(t)+cos(k-1)*t/(k-1)), (k-1)*r*(sin*t-sin(k-1)*t/(k-1)), t = 1 .. 1, r = 1 .. 1, k = 3 .. 3]

Is there a symbol or something that i am supposed to be looking for in the error message so i know where the error is occuring?

error test results in error

Christopher2222 — Sun, 04 Mar 2012 21:38:00 Z

I know I can use try catch but why doesn't this work?

is(tan((1/2)*Pi) = "Error, (in tan) numeric exception: division by zero")
Error, (in tan) numeric exception: division by zero

It is a string value error that should be true in the test shouldn't it?