Advanced Search

Maple Questions and Posts

These are Posts and Questions associated with the product, Maple
View unanswered posts
Maple Questions and Posts Feed

how to use permgroup ?...

Asked by: ComputerUser 535
group-theory
November 23 2019
0  6

   1 1 1 2 2 3 3  

(  1 3 3 2 2 1 2 )

how to input this permutation into permgroup ?

 

Can't seem to get the command to work......

Asked by: AzU 15
ode dsolve numeric
November 23 2019
0  3

Hi again friends. I simply can't get the command to work. My task is to dsolve the differential equation numerically, by using dsolve which has an option called numeric. I need to use the numeric and odeplot command to plot the numerical solution for f(t) for the timeinterval from 0 to 600 s.

So I searched and found this link: http://www.maplesoft.com/support/help/Maple/view.aspx?path=plots/odeplot

The example in the page was useful, I followed the steps, but I keep get this error-repport:

Error when using FourierTransform...

Asked by: ComputerUser 535
discrete-fourier-transform plotting
November 23 2019
0  2
with(DiscreteTransforms);
Digits := 600;
ss := 1:
windowlength := 50:
ma := []:
me := []:
counter1 := 1:
Z := Vector(windowlength, datatype = complex[8]);
Z5 := []:
for i from windowlength+ss to 1+ss by -1 do
eq2 := x:
eq2a := x*2:
god := solve(eq2a=y, t);
ma := [op(ma), evalf(subs(t=100, eq2a))]:
me := [op(me), 100]:
Z[counter1] := [Complex(evalf(subs(t=100, eq2a)),0)];
counter1 := counter1 + 1:
od:
Z2 := FourierTransform(Z);
Z5 := []:
for i from 1 to counter1 do
Z5 := [op(Z5),Re(Z2[i])]:
od:
p := dualaxisplot(listplot(Z, color = red), listplot(me, color = blue), style = line, gridlines = false):
p3 := dualaxisplot(listplot(ma, color = red), listplot(me, color = blue), style = line, gridlines = false):
> Z[counter1] := [Complex(evalf(subs(t = 100, eq2a)), 0)];
Error, unable to evaluate expression to hardware floats: [0.1395407376854069872222364799062994087470140319577366200576294159849633469734297167456440703192248821030980068084453175485138428545865904609881858312543669285411895851509107873579430804484462212873775830538595858575740816705029437533106045686220745333574567547827085763824574616984653193169818770743931611305635956093618789559193701301264280264321394773730076308141252308187470580964653518965117431518571850910086488220847415724949651796448259541027929735646487459091205173804995401770417274097230705447077344465381061736283732438996738107330437055827420813951050981604075837450139995544638...
> Complex(evalf(subs(t=100, eq2a));
Error, unable to match delimiters
Typesetting:-mambiguous(Complexlparevalf(subs(tequals100comma eq2a)),
  Typesetting:-merror("unable to match delimiters"))
> Complex(evalf(subs(t = 100, eq2a)), 0);
1.395407376854069872222364799062994087470140319577366200576294159849633469734\
  297167456440703192248821030980068084453175485138428545865904609881858312543\
  669285411895851509107873579430804484462212873775830538595858575740816705029\
  437533106045686220745333574567547827085763824574616984653193169818770743931\
  611305635956093618789559193701301264280264321394773730076308141252308187470\
  580964653518965117431518571850910086488220847415724949651796448259541027929\
  735646487459091205173804995401770417274097230705447077344465381061736283732\
                                                                               -571
  43899673810733043705582742081395105098160407583745013999554463814123790354 10   
   + 0. I

Maple - Having issues using dsolve();......

Asked by: AzU 15
dsolve
November 23 2019
1  15

Hi everyone, I'm having a bit of trouble using the dsolve () command in maple, it keeps coming up with error messages.

My assignment is to find the first order differential equation of Tovn(t), and then I know that you have to define it and then dsolve the definition.

The problem is, that what am I doing wrong?

How to find a list of common sub list from a numbe...

Asked by: ComputerUser 535
listtools list
November 23 2019
0  4

For example
input 3 lists

[1,2,3,4,5]
[0,5,2,3,7]
[7,5,2,3,2]
 

return [2,3],[5,2,3]

how to plot of p1,p2 ?this code of Maple 15 and i ...

Asked by: permanoon123 165
plotting
November 23 2019
0  8

permanouuuuuuuuuuuuuuuuuun.mw

reform equation of a line to y = m*x+n ??...

Asked by: MapleUser2017 170
line isolate
November 23 2019
0  3

If I have a line on the form a*x+by+c = 0 which command do I use to rearrange it to y = m*x+b ?

Other than isolate? 

Many thanks in advance.

Trouble using 'Solve' for system of equations and ...

Asked by: 28th 5
solve inequality
November 23 2019
1  7

testing2.mw
 

> 

restart
> 

P := 10; -1; r := .5; -1; c := 1; -1; Rb := proc (alpha) options operator, arrow; (1/2)*P+(1/2)*c+(1/2)*alpha*cos(alpha) end proc; -1; plot(Rb, 0 .. (1/2)*Pi); -1; sys1 := {beta > 0, beta = cot(beta), beta < (1/2)*Pi}; -1; p := solve({beta > 0, beta = cot(beta), beta < (1/2)*Pi}, {beta})

"p:="

 (1)
> 

sys := {x^2 = 9, x+y < 10}; -1; m := solve({x^2 = 9, x+y < 10}, {x, y})

{x = 3, y < 7}, {x = -3, y < 13}

 (2)
> 

NULL
> 

NULL
 

 

Greetings!

I'm triying to solve this system in Maple:

  beta = cot(beta),

  0 < beta < (1/2)*Pi

But when I execute this statement

  p := solve({beta = cot(beta), beta>0, beta<(1/2)*Pi}, {beta})

the value of p in NULL.  Maple doesn't show any errors. 

Edit: Example from the "solve" help article works as shown, that was my typo.

Could you please tell me, what am I doing wrong?

File->Exit (Alt-F4) does not work in 2019.2 ...

Asked by: nm 8552
close gui
November 23 2019
2  8

This is another problem I just found in Maple 2019.2 on windows 10. professional.

I wanted to close Maple, so did  File->Exit 

 

But Maple did nothing. It did not close.  Also Alt-F4 did not close Maple. I had to click on the little X on top right corner of the open window to close Maple.  

In earlier version this used to work to close Maple.

Do others see this as well?  To reproduce, simply start Maple, and do File->Exit.

Here is a movie also

 

Separate the Differential and non-differential par...

Asked by: Tamour 25
derivative differential-equations selectremove
November 22 2019
2  3

I want to separate  the derivative and non-derivative (the part other than  derivative) terms from the following (shown in figure) equations by using maple commands or code. Kindly help me. Thanks in advance. 

 

Graph window dragging bug...

Asked by: Christopher2222 5785
worksheet plotting
November 22 2019
1  1

This may be a bug.  In Maple 2019.0

plot3d(x^2+y^2)

Now grab the graphing window and drag to adjust it's size.  It doesn't adjust it's size until you let go of the mouse button.

Which package would use to find inflexion points o...

Asked by: MapleUser2017 170
interpolation inflection
November 22 2019
0  4

Any with an idea on how to determine the Inflexition points on a discrete data set in Maple? I can only find stuff online on how to in Matlab, but not in Maple. 

Any suggestions on how to do it in Maple? 

 

 

Graphics 4d en Maple...

Asked by: boneman 20
plotting
November 22 2019
0  2

You can graph Maple in 4 dimensions ... help...

 

Examples

...

How to guess which physics data suit to theorem eq...

Asked by: ComputerUser 535
physics geometry
November 22 2019
0  0

If maple can auto discover derived equations, 

then most variable are unknown name which may or may not be physics variable.

so, how to guess which physics data suitable for these look like meaningless variable?

or these tools only visualize the relationship of existing known equations?

Solve for x Step by step...

Asked by: newessar 5
step-by-step homework
November 22 2019
1  1

Please, I would really appreciate if anyone can help me to find the step by step solution for this equation:

I got the right answer by choosing Solve for X, but it did not come with step by step :/

 

8*x*e^(-3*x^2) - 24*x^3*e^(-3*x^2)

 

kind regards

First 489 490 491 492 493 494 495 Last Page 491 of 2097