Unanswered Questions

This page lists MaplePrimes questions that have not yet received an answer


Hi,

I have a simulation file consisting of a number of modelica custom componets and maple custom components. I initially generated Random Data with mean 1 and standard deviation 0.5. Constructed all the blocks and combined with a multibody system, it worked fine. However, when I generated Random data with zero mean, then I have this error/problem "Simulation Problem: maximum number of event iterations reached (100) at 1.85000".

I used a couple of pre() function with clock=sample(0,0.01...

What do these parameters of Clutch mean,phi_nominal,w_small,k_locked?

And, how can I use them?

Anyone can tell me the detail?

Thank you.

Hi all.

I want to make a graphical application for a webpage, showing curves with a certain number of points on X axis (about 10 or 15), and some sort of “handles” on curve values (for every curve,...

I have a set of test equations. I am substituting the coefficients of the variables A1 ..A4 and the constants in the equations. Most of this I have made work fine. There are 2 coefficients I cand make be substituted. In eq1 k*d the coefficient of A3 and eq5 3.1d2 also the coeff of A3 .Have tried subs and algsubs but can't make it work. The reason I want to do this is in reality I have 15 equations...

Hi everyone,

I am trying to solve the following dimensionless system of pdes:

 

u1t=u1x+u2-u1

u2t=3.139uxx-2u2+u3+u1

u3t=-u3x+u2-u3

the boundary conditions are u1(5,t)=0, u2(0,t)=0, u2(5,t)=0, u3=1-heaviside(t-0.1)

initial conditions are u1(x,0)=0, u2(x,0)=0, u3(x,0)=0

 

pdsolve returns some results but they are not stable. Since I'm fairly new to maple, I don't know if it is possible to discretize...

How do I prevent that maple scrolls through the worksheet and stops at the bottom when I want to execute the  whole worksheet. If i want to execute the whole worksheet I just want to stay at the same place in the worksheet and I also don't want to expand previousily closed sections. I use document mode. Thanks in advance

aim: To solve the van der pool DE deqn := diff(x(t), t, t)+x(t)+epsilon*(x(t)^2-1) assuming pertubation expansion

 

how can i solve pdes of the following form in maple

[tex] tc(t,x)\frac{\partial a(t,x)}{\partial t} - ta(t,x)\frac{\partial c(t,x)}{\partial t} = a(t,x)c(t,x) + t(a(t,x))^2 and be able to find both functions a(t,x) and b(t,x)

I installed Maple 16 on Windows 7, 64 bit, french edition, last week. Everything works fine, except that suddenly the Maple 16 icon has been replaced by the anonymous exec file on windows. Tried to restart, but the icon is gone...

Does anyone else get this problem ?

Hello.  The ‘optimization’ flag for the fortran codegen or CodeGeneration only will operate on a single array.   It would be very very helpful to me if I could put multiple arrays (all of them having common variables) as input that the codgen and CodeGeneration can automate all at once (im mostly interested in the fortran and matlab codes).  What I do now as a work around is manually put all the multiple arrays into one giant array, then run code...

Hi guys, 

I want to know how to write 2 procedures in order to  construct 2 different complex mappings with polynomials of degree 4 and 5 and tell what the pictures really mean.

Can anyone suggest me or give me hints on how to do this? 

One way I know is to construct meldelbrot as follow: 

mandelbrot:=proc(x,y)

localz,ct,xn,xnold,yn,iter:

Iter:=25:Digits:=10:xn:=x:yn:=y:

for ct from 1 to iter while xn^2+yn^2

Hi,

i want to use "dsolve({ODE1, IC1, IC2},numeric)" in a procedure. But it has some problems with the curly brace. Is there a special command to replace the curly brace?

Thanks

I've written some Matlab codes as mfiles; now how could I import them into Maple? (I didn't understand what Maple help says!)

 

 

 

 

 

 

 

 

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