## differentiation y^2+(x-c)^2=c^2 w.r.t. x...

Hi,

How do I ask maple to differentiate y^2+(x-c)^2=c^2 w.r.t.  x ?

it's defnitely not implicitdiff

I think I knew this before...then I just cant remember...

## join in the direction fileds...

> c:=-4:
> FM1:=DEplot(diff(y(x),x)=-c/x^2,y(x),x=-10..10,y=-10..10,color=red):
> FM2:=DEplot(diff(y(x),x)=x^2/c,y(x),x=-10..10,y=-10..10,color=green):
> display(FM1,FM2);

how can I join the direction fileds together?

i mean just like plooting the solutions of the ODEs..

I want to do with "linestyle"..tried, but dosent seem to work...

## Easiest way to extract data from an excel spreadsh...

Just wondering what the easiest way is to extract data from an excel spread sheet so that it can be used as data in a maple worksheet.  For that matter, what other database programs can I use with maple?

Thanks.

## Typing Documents Containing Trig Graphs And Plane ...

Is Maple (student version) appropriate for typing non-professional documents containing trigonometric graphs and 2D shapes?

I would like to plot functions like sin(x)  with the horizontal axis labeled in multiples of pi, and draw polygons with angles labeled.

## How to incorporate Maple 9.5 into Windows...

I'd like to copy and paste the following from Maple 9.5 into a Windows 2000 text:

lim x-->0  .

The trouble is,in Maple you can't write x-->0 as a subscript to the word "lim". That is how you HAVE to write if you're writing a maths thesis. Can someone please tell me how I can overcome this problem? Thanks

Ian

## Easter is close, '08

by: Maple

The time for Easter eggs will soon be here.

And using LibraryTools to browse and poke about in Maple's .mla files can show a few undocumented items.

Here's one below, that's an interesting part of a package.

## Can anybody help me solve this transcendental equa...

The equation like that:

a*(x/sqrt(x^2-1)+2*x/(Pi*sqrt(x^2-1))-1-2/(Pi*x))=1

when i used solve command in Maple, the result is :

RootOf((-Pi^2-2*Pi^2*a)*_Z^6+(2*Pi^2+4*Pi^2*a+a^2*Pi^2)*_Z^4+(4*a*Pi+4*a^2*Pi)*_Z^3+(-a^2*Pi^2-2*Pi^2*a-Pi^2)*_Z^2+(-4*a*Pi-4*a^2*Pi)*_Z-4*a^2)

this result is not what i want, i need exactly solution.

Can anyone help me?

Thanks very much for your help!!

## How do I Generate Random Numbers with Correlation ...

Hi, I am trying to generate 20*10000 random numbers with Logistic distributions and a 20*20 correlation matrix, but I don't know how to do so. Could someone help me on this topic?
Thanks!

## Input/Output Table...

Hi All,

Could someone please tell me how to create a simple input/output table from an equation such as y=x^2 + 2 or lead me to a task from which I can cut and paste and change parameters.

Bob

## phase portrait...

Hi, using a solution of u that I have already calculated from an ode (by the method of multiple scales), how would I plot a phase portrait of u' against u??  All help is greatly appreciated.  Many thanks in advance.

## Integral question...

Hi, I'm new to maple and to the site.

How do I find and / or graph a double or triple intral over a implicit function?

for example I want to find the volume         / /  x^2  dA                over the ellipse x^2 + y^2 - xy < 2.

## Discontinuities... I think...

Hello, again,
basically, I have an implicit relation for lambda:

> eq1 := (sqrt(lambda*alpha)+alpha)*BesselJ(alpha, 2*sqrt(lambda*alpha))/(2*sqrt(lambda*alpha)) = BesselJ(1+alpha, 2*sqrt(lambda*alpha))/alpha;

So solutions of lambda, for a particular alpha are given at the intersections of the two functions:

> plot({subs(alpha = 2, (sqrt(lambda*alpha)+alpha)*BesselJ(alpha, 2*sqrt(lambda*alpha))/(2*sqrt(lambda*alpha))), subs(alpha = 2, BesselJ(1+alpha, 2*sqrt(lambda*alpha))/alpha)}, lambda = 0 .. 50, -1 .. 1, color = [red, blue])

## FEM library for Maple...

Anyone out there know where the FEM library is that is mentioned in the Finite Elememt Method worksheet from the Applications Center, author Fedderik van der Bos, 2000?  The introduction lists several procedures that are stored in the FEM library which are loaded via the with(FEM) command.

## math...

The amount 180.00 is what percent greater than 135.00?

## Can I translate from Maple 8 to Maple 11?...

I found a used copy of Probability and Statistics Explorations with Maple by Karian and Tanis. I'd like to work through it, but the supplements come in Maple 6,7 and 8 versions and I use Maple 11. Can I load the supplement?

The version 8 one comes as a "package", stat.all, but I don't know what to do with it. The version 6 one comes as two files, a help file, *.hdb, which seems to load, and a stat.src file. I put the  src file in a directory which I added to libname, but I can't use "with" to call it.