## Opening a maple file...

Hi, there

I work with maple 13 and made a file that its contet is plotting curves and its size is

151 MB.Now when I want to open it the file cannot be opened completely only about a quarter of its contents rises.

REGARDS

Yegan

Dear all

## How to broaden the z(Hue) color range...

Take a 3d plot of some uneven surface in the xyz space and you want to have the surface colored according to local z-coordinates (e.g. a valley is blue, a peak is red with all rainbow colors inbetween). For such a color-coding one can in principal select the plot option "Color->Z (Hue)". What do you do if the valley and the peak are still more or less green colored? How can you force the valley and peak to have different colors?

I have this surface which I display with the following commands:

Belt:=plots[surfdata](Surface,color=C,labels=["x","y","z"]):

display({...,Belt});

It all works, and the surface has nice default rainbow colors, but when I choose Color->Z (Hue) everything turns to green. Also when I manually write in the first of the above lines "color=["Blue","Red"]" the surface turns all red. The ranges of the x and y axis are larger than the z axis by a factor of about 50. Might this be the problem? How can I adjust the color ranges for my small z axis?

## spacecurve label...

How would you insert a label-coordinate in this command:

textplot3d([subs(E[11]=0,x[11]),subs(E[11]=0,y[11]),subs(E[11]=0,z[11]),"Planet"]):

## Speeding Up Solving Equation Numerically...

I am currently running into an issue where the numerical solution to an equation (involving an integral, yes, but the value I am solving for is simly a constant in the integral) is taking significantly longer than I would hope it would to solve. I am solving a similar equation (with a simpler expression) and it is significantly easier to solve, and I am hoping for that kind of speed.

On the last two lines in the attachment, I have two expressions. The penultimate expression is the baseline speed that I would like to match. The last expression is the fsolve I would like to speed up.

Is there any way to numerically speed up the process? I found that when I did tracelast after halting the process, there were HUGE numbers being added and subtracted, multiplied and divided. Not only did this significantly slow down the proecss but it also adds much numerical instability, which I would also like to avoid.

All help would be appreciated.

pole-dragging-mapleprimes.mw

## How to copy paste Maple code into a message?...

I can't directly copy Maple code into messages but have to insert into Word first, apply some changes that for better readability and copy it from there via Word-paste. Is there a direct way?

## How do I mark a circle of arbitrary values...

SmithChart.mw
If I want to plot Smith Chart ,how do I mark a circle of arbitrary values?

then,How do I avoid the polar line to cover other  circle line?

Any body can give me some ideas or better ways to plot Smith Chart?

Thanks.

(Z0)   + I Ω

(ZL) + I Ω

(ω) ｒａｄ／ｓ

α dB/m= Np/m

(β) ｒａｄ／ｍ

Zg

(l)

(z)  l

(Vg)

(u)

output：

(Γ)

(Γ)

(SWR)

(zL):

(YL): S

tanhγℓ

tanβℓ

(Zin):   Ω

(zin):

(γ):

(Vo)(z=0): V

(Io)(z=0): A

Vo+):      V

(Vo-): 　V

(Vs): V

(Is): A

):

r=     ,   x=   Yo=

## How do i plot the circle...

cilrcle.mw

i want to plot a circle with that centered at (0,0),and the radius is the length of Point2 and orgin

but it shows the error

how could i do to solve this

## I want to obtain the formula of SINGULAR VALUE of ...

Dear.All

I'm a beginner of Maple 13.

In MATLAB, there is a command 'sigmaplot' which draw the 'SINGULAR VALUE OF SYSTEM H(jw)' over all frequency range.

I want to obtain the function of the 'sigmaplot' graph about frequency variable 'w'.

so I defined matrix A,B,C,D in Maple13.

and specify H like following

H:= Multiply(C,Multiply(Inversematrix(s*IdentityMatrix(8)-A),B))+D

--> It is to express H=C*((sI-A)^-1)*B+D that is the state-space matrix of frequency domain form.

and Maple 13 gave me a very long formular expressed by 's'.

Then I try to 'SingularValues' command

but there came up 'Error Message : Error. (in content/polynom) general case of floats not handled'

I couldn't resolve this problem....

Could you give some advice ?

## How do I solve Axis coordinates problem...

I wnat to print the polar that contain a part of loops,but it always contains all loops.

how do I solve this preblem?

## Draw the graph in 2 D...

AOA. I want to plot the graph of the following function

A new generalized complex representation of Euler gamma function in terms of Dirac delta function, which is

GAMMA(s) = 2*Pi*(sum((-1)^n*Dirac(s+n)/factorial(n), n = 0 .. infinity))

where*s = sigma+i*tau

for differenet values of parameters

## kernel connection has been lost...

Hi,

I want to compute a formula which is too complicated and it contains some variables. So I divide it into several parts. But it always turns out kernel connection has been lost. I looked maplesoft online help system and change the ConnectionType from 0 to 2. But it does not work. So how does this happen and how to solve?

I attach my maple file which appears error.
Thanks a lot!

Regards,

Yan

## Define a band matrix using n vectors...

I want to define a band matrix using n vectors. Detial given maple sheet. please help me

Help.mw