Hi,

I am new to Maple (Version 17) and got some trouble with the solve command:

The Problem is, that Maple does not find a solution, allthrough there is one :-)

If i put a:=Pi/4 before the first commad, I get one solution, but i want to find the solution in dependence of 'a'.

Also i tried to remove the last equation (a>0...

How to find the sum of the series

sum((x^(3^n)+(x^(3^n))^2)/(1-x^(3^(n+1))),n=0..infinity)

under the assumptions x::real, x<>1, in a closed form with Maple?

it solve result in numeric but not in terms of t, why and where is t?

restart;

equation1 := subs(x=0.5,-(t*x+(1-t)*x+2*x)/(t*y+(1-t)*y+2*y)) –(1-exp(y)) = 0;

equation1fixedx := solve(equation1, {y});

restart;

equation1 := subs(y=-0.1,-(t*x+(1-t)*x+2*x)/(t*y+(1-t)*y+2*y)) –(x+0.08) = 0;

equation1fixedy := solve(equation1, {x});

Hello everyone,

I am trying to solve a system of odes but it takes too much time to excute.

I have attached the sheet. Please have a look.

ode.mw

Thanks

I have been solved a optimization problem by

Hi all,
I plot a cube using the command

with(plottools);
cube := cuboid([0, 0, 0], [1, 1, 1], color = black);
plots[display](cube, scaling = constrained, axes = boxed, style = wireframe, thickness = 3, orientation = [40, 75]) 

Now I would like to plot with different colors some of the faces/edges of the cube? How do i do it? Is it better to use a different code for the cube itself?

Bests
Manu 

I upgraded to Maple 17 from Maple 16 today and I noticed that all of the sudden I can not enter the } symbol anymore although the { symbol works just fine. (I have an azerty keyboard so those keys are AltGr+0/ctrl+shift+0 and AltGr+9/ctrl+shift+0 respectively). My solution right now is to enter the symbol each time via the fences panel, but  since it's a commonly used key this isn't really optimal. 
Does anybody know what causes this and how I can fix this? 
Thanks!

I have a rather complicated expressions involving several parameters. The parameters are calibrated to some baseline. I'm interested in having a quick look at how changing each parameter changes the value of the expression. This is very standard. I wrote a procedure to create a list of values to the left and to the right of the base value for a given parameter. I then use that to look at my expression, to plot lists of expressions, and so on.

I thought I'd share this...

Maple has a number of protected names that cannot be redefined without some work.

A common request is to use the letter j or J instead of the default I for the imaginary unit. Also common is to be able to use the letter I as an ordinary variable, rather than as an imaginary unit. For this, there is a very convenient interface command.


restart;

(-1)^(1/2);

I

interface(imaginaryunit=J):
(-1)^(1/2);
 
 J

(There...

Hi,

I have tried to solve a simple cappilary expresion but I'm not sure...
Please look for ODE, describing in the eq10.
Further I can't explain ln(-hmax).
I will be appreciated for any help.

wzel 

infiltr.mw

i do not have a handbook of function properties, or properties from analysis

is there someone written a package to list which properties a function have after input a function?

Hi,

The subs command is not working properly for Vector type, see worksheet.

I can use simplify instead, but that's not what I really wanted.

Download vsubs.mw

Casper

I've used fsolve in Maple 6 to find the roots (real and complex) of a polynomial.  I'd like to create a plot showing the location of those roots in the complex plane.  How can I do this?

Hi

I want to creat a vector that every of it's element are a function of for example 't'.

for example:

I'm sharing this in the hope it might help someone (my future self being the most likely). Since my suggestions are not perfect and a little messy, feel free to suggest better ways.

I spend a great deal of time tweaking my plots. Oftentimes I want to add labels to the curves right onto the plot. Most of the time it's easy to do. Occasionally I struggle. Sometimes I succeed, sometimes I give up.

Below is an example of the kind of plot I sometimes create. It's not perfect.