## How do I simplify an equation?...

Hi I'm currently doing a maple assignment for my uni course, and was wondering how do you simplify this equation to get a simple quadratic! 6x^2-7x-3*exp(-1/5*x) as you can see its really a simple quadratic with an exponential stuck on to it! My question is can you simplify it with maple, 2.) Does the whole equation only have 1 root since its an exponential function stuck on! Thanks Chris

## A syntax problem... difficulty finding the source....

So I went ahead with alec's timer code and expanded on that, his window approach was also the approach I would need to furthar push the project to completion, so the beginning is pretty much his code, and works plenty fine. Now I was working on the project and then realized in order to set things up the way I want, i'm going to have to make a grid layout, also suggested by a fine coder here in a previous help topic, now my problem is, I had to rehaul ALL of my code to use grid layout, grid layout seems like a really easy to use system, and I started converting all the code to comply with that, and in the huge mess of brackets and square brackets, I seem to have messed up the overall opening and closing of said brackets.

## plotting general polyhedra...

How do I plot a prism or a general polyhedron with maple ? I tried polygonplot3d but the result is not satisfactory because maple does not recognize the edges between the faces correctly. Thank you very much for your answer.

## Extracting term split by "+" and saving the term i...

Hi, Let's say there is a equation as following: a+b+c How can I save each term by "+" into an array? I.e) a+b+c Then I'd like to save each paramter split by "+" into an array. a is saved to array[0] b is saved to array[1] c is saved to array[2] I'm not sure I could make it in Maple. Any idea using Maple? Thanks!

## Magnitude...

Is there any way in MAPLE to set up a workksheet in such a way that you can enter |B| and have it produce the same result as Mag(B) where Mag:=b->sqrt(Re(b)*Re(b) + Im(b)*Im(b))

## differentiate the unit vector of a rotating axis...

I have a frame where u_n and u_t are perpendicular unit vectors with u_n pointing to the right and u_t pointing up. Where the frame is rotating with angular velocity w in the anti-clockwise direction and time is t then d(u_n)/dt = w u_t How do I set Maple up so that it will do a symbolic differentiation of unit vectors - or any vector - in a rotating frame?

## Graphs like the ordered pairs of nodes and edges...

Hello! Is there any way in maple to create graphs? I would like to make my graph theory note more picturesque with it. Daniel

## problems with eps made from maple 10...

I need to export some 3d graphs to eps, then add some text and line, and then use them in a tex document. There are several problems with the eps produced by maple. Maple also saves the non-visible parts to the eps. This just makes the file unnessesarily big and slow to work with. Can I stop it from doing this? The lines of the curves is for some reason composed of thousands of lines on top of eacother. A little piece of a simple line, can consist of 10 thousand lines on top of each other. This makes a simple graph easily consist of 100 thousand lines and very slow to work with. Can I stop it from doing this, and only make the visible line.

## A Problem with plot function under GOT...

A simplified optimization problem of mine can be stated as follows: obj := (b) -> x^2-b*y; constr := (b) -> b*x+y = 0; SL := (b) -> NLPSolve(obj(b), {constr(b)}) which means that the objective function "obj" is minimized under the constraint "constr" given a certain value of b. Input the command SL(0), SL(1)..., maple will give you corresponding optimized values of "obj". But this relationship between b and SL(b) cannot be plotted. At least, with a simple function like plot(SL(b),0..100) it is impossible to get a figure. So...how solve this problem here? Thx a lot!

## How do I plot Cos(w*t) in frequency domain?...

Hi, I'm trying to plot a simple function of K*Cos(w1*t)+K*Cos(W2*t)+K*Cos(W3*t) in frequency domain using Maple. Y-axis can be the amplitude and X-axis is frequency domain in radian. I could use Fourier transform to conver the time domain to frequency domain function. But, Since the w1, w2, and w3 are undefined values, I don't know how I could draw it in symbolc way in frequency domain. Here is my assumption for w1, w2, and w3. w2-w1 not equal to w3-w2 They could certain frequencies in positive. K is a positive constant. I expect a plot as following:
```      Amplitude
^
|
|       |     |   |
|       |     |   |
```
As seen, w1, w2, and w3 has a different interval and Dirac pulse at w1, w2 and w3 domain with an amplitude of K. I have no idea how I could implement this symbolic plot in Maple. Should I use some assumption statement? or programming?? Please help. Thanks,

## typesetting...

hi i have one question in maple is many function which can have two 2D output like sum: Sum(f,i=3..n); in 2d Sum(f,i=3..n); sum(f,i=3..n); in 2d (n-2)f; for example i wanna my own function which will has two forms like a sum but in unevalued form will be instead of sigma for example Q or another symbol and above and belove that symbol will be some values, and in evaluated form there will be expression or number; another example is Diff or BesselJ funcions which have both two forms (symbolic/algebraic) my question is how to make this? Q(4,2);

## Picking the Eqn from PDE system to plot in plot3D...

Greetings! Newbie to the forum... I have created and solved a set of 2 PDE's, and I am trying to plot the results. I am capable of seeing the results of the second PDE by using the default command below. Is there a way to specifically pick which PDE to plot (I'm sure there is, but I can't seem to figure it out). pds := pdsolve(PDEset, PDEIC, numeric, time = t, range = 0 .. 30); pds:-plot3d(t = 0 .. 5, x = 0 .. 30, axes = boxed); Any help appreciated! Fred