## Flatten lists with sublists...

Asked by:

Given a list with sublists e.g.

[[a,b],[[c,d,e]]]

is there a way of merging everything into a single list, for example

[a,b,c,d,e]

## Why my code error when i try to execute the entire...

Asked by:

i have a problem when i try to re run my code by doing execute entire sheet, but when i first create it, it run without any errors
Thanks

## using coeffs~() on a Vector...

Asked by:

Hi

I have a Vector of polynomials in x[1] and x[2]; and I want to use coeffs to get the coefficients of bothe elements of the Vector; using the command:

Eq2Coeffs := `~`[coeffs](%, [x[1], x[2]])

bizarely the result i get is something in terms of x[1] and x[2].

Here is the worksheet this problem emerged in, the specific command is 3.8.

## wavelet codes foe solving differential equations e...

Asked by:

Hi ,

I want to ask if there is any maple code of how to construct wavelet to solve fractional differential eqautions? Or any reference may be help me

thanks

## How to address a specific case of an output by the...

Asked by:

Hi there!

I like to work with output labels, since it allows me to execute a lot of code without having to make sure the respective previous calculations already ran each time I open the file.

Say my output is a list, and has label (1.3), then I can address the 2nd element of that list by (1.3)[2].

Sometimes output is organised in cases, for example when solving for the root of an equation. How can I address a specific case of that output using the output’s label?

If the case specifier is simple enough I can do that with "assuming". But when it is more complicated it is quite cumbersome to do so.

Thanks for help!

## Why the frist row of my matrix is fixed, while I e...

Asked by:

In the following program why the first row of Matrix P is costant, while I expect it varies?

 >
 >
 >
 >
 >
 >
 >
 >
 >
 (1)
 >

Download Sooal.mw

## how to break a loop and set anew iteration...

Asked by:

here my problem i work on ;

i want maple to end the enternal loop if it can't solve the equation after  some iteration maple couldnt solve the equation and get stuck

 >
 >
 >
 >
 >
 >
 >
 >
 >
 >
 >
 >
 >
 >
 >
 >

Download Q3.mw

## Procedures, procedures...

Asked by:

Hello to everyone!

I was trying to implement the following proc:

 >
 >
 >

Can anyone help me to figure out my mistake?

Download proc.mw

## Help with the loop...

Asked by:

Good day everyone,

I am trying to write a code for the loop of the equations below such the Theta[k] and Phi[k] start from 2 to M while F[k] starts from 4  to M.

Anyone with good informations should please.
Below is the link.

Thanks in anticipation

Solution_1.mw

## How to write simplify(eval(…)) as composition simp...

Asked by:

Hi there!

In order to keep the code more readable, and to spare myself some brackets, I am trying to use the function composition to write

as

but it doesn't work. How would I do it the right way? (I am coding in 2D math)

Thanks for help!

## Can not open context menu...

Asked by:

Hello everyone! I have just started to using Maple 13. I want to solve complex eauation systems.

When I am working on Maple, If I write simple mathematical calculation and then press right click, the context menu open. However, I want to use solve command. Therefore I wrote an eauation after than press right click the context menu will not open.

What is the reason of this problem?

## Error when create MapleSim custom component...

Asked by:

Hi everyone, I need to use the integral calculation in MapleSim but there is no MapleSim Block to do it. So I create a Custom Component and using the integral calculation from Maple, the expression of the equation was done. But when I click Dimension analysis button, one error popped out as the photo. Have anyone got the same error before? How should I do to solve it? Thank you very much.

## 2nd order ODE with complex coefficient...

Asked by:

Hi

Assume a linear second order ode with constant coefficients as follows:

M*u''+C*u'+K*u=0

where the symbol (') denotes derivative with respect to time and M, C and K are positive real constants.

The initial conditions are u(0)=u0 and u'(0)=u'0.

Substituting u=exp(a*t) in the ODE to calculate characteristic equation, one has

M*a^2+C*a+K=0  ---> If 0<C<2sqrt(M*K) then u=exp(-C/(2M)*t)*(c1*sin(w*t)+c2*cos(W*t))

in which c1 and c2 can be obtained from initial conditions and W=sqrt(C^2-4*M*K)/2M.

For the case that C is imaginary number, assuming C=i*c yields

{a1,a2} ={ -(c/(2M) +sqrt(c^2+4*M*K)/2M)*i,(-c/(2M) +sqrt(c^2+4*M*K)/2M)*i }

where i is one of the square roots of -1.

Is it true to write u=c1*(sin(a1*t)+cos(a1*t))+c2*(sin(a2*t)+cos(a2*t)) ?

I solve two examples by Maple,

dsolve({diff(u(t), t, t)+0.1*(diff(u(t), t))+2*u(t)} union {u(0) = 1, (D(u))(0) =0.1});

dsolve({diff(u(t), t, t)+0.1*I*(diff(u(t), t))+2*u(t)} union {u(0) = 1, (D(u))(0) = 0.1});

Second example gives complex answer. Is it possible to get trigonometric answer with real constants c1 and c2?

## java error starting Maple player...

Asked by:

Hi folks,

I've just now installed Maple player, and I find it crashes immediately when I run it:

Exception in thread "Request id 1" java.lang.UnsupportedOperationException: PERPIXEL_TRANSLUCENT translucency is not supported
at java.awt.Window.setBackground(Window.java:3842)
at java.awt.Frame.setBackground(Frame.java:988)
at com.maplesoft.worksheet.application.WmiSplashScreen.<init>(Unknown Source)
at com.maplesoft.worksheet.player.WmiPlayerStartupStrategy.showSplash(Unknown Source)
at com.maplesoft.worksheet.application.WmiGenericStartupStrategy.doStartup(Unknown Source)
at com.maplesoft.worksheet.player.WmiPlayerStartupStrategy.doStartup(Unknown Source)
at com.maplesoft.application.Maple.doStartup(Unknown Source)
at com.maplesoft.application.Application.startup(Unknown Source)
at com.maplesoft.application.ServerProtocol\$StartApplicationHandler.processCommand(Unknown Source)
at com.maplesoft.application.ServerProtocol.executeCommand(Unknown Source)
at com.maplesoft.application.ServerProtocol.processNextStep(Unknown Source)
at com.maplesoft.application.ExchangeProtocol.executeProtocol(Unknown Source)
at com.maplesoft.application.ApplicationManager\$Listener.run(Unknown Source)
at java.lang.Thread.run(Thread.java:748)

The operating system is CentOS 7 (64 bit).   Any idea how I can fix this?

Thanks,

Bryan

## How to solve system of convolution equations in ma...

Asked by:

How to solve system of convolution equations in maple?

 First 444 445 446 447 448 449 450 Last Page 446 of 2084
﻿