## simplify expression...

Hi,

I'll have to found the equation of equilibrium in terms of displacement for shell with double curvature. Well, I have 3 equations and 3 other equations that I must put in the others 3. Manually it's a suicide, ho can i do it with Maple and at the end semplify the differential equations? My problem is to say at Maple the dipendence of some function from other variable!

Thanks a lot!

## two lists trasform using map?...

Various transformations on the members of a list can be easily done using things like `+`(op(map(f, L))) for a list L and a function f (e.g., f:=x->x^2 to get sum of squares). How can we do such transformations on two or more lists using map? For example, how do we do most effectively squared sum of differences between the corresponding elements of two lists?

## 1-D numerical integration not going well with this...

Hello, I'm trying to numerically integrate the attached integrand for x from zero to one with high precision. When I get to software floating point (15 digits or higher), the Maple server goes beserk allocating memory, and loses its connection to the Maple application. I have tried different methods (_Sinc, _Dexp, _CCquad, _Gquad) and in each case I have to terminate Maple. The "_d01" methods terminate without giving an answer.

## Creating jpg - files...

Hi,

I have just another question. I would like to create a high resolution jpg file of a 3D plot, but I get only pictures in a very bad quality (even by using the plotpoints command).

How can I enhance the quality of exported picture files?

Thanks,

Dirk

## Evaluating Data...

Hi,

I have some numerical data (-> data2.txt) for a velocity profile (x- and y- coordinate with corresponding velocity). I would like to compare this data with a analytical function (3D plot -> Maple file).

Do anybody know, how

#1 to get the data - points in the 3D plot and

#2 how to determine the error between the data - points and the 3D plot?

Thanks,

Dirk

## how do I create a IDF (intensity duration frequenc...

I am new to maple and trying to create an IDF curve (intensity duration frequency curve) for rainfall. The fomula is quite simple I=A*T^c, where I-= rainfall intensity, A is the average rainfall in a given period and T is time of concentration (10 min) and C is a coeffecient developed from 40 year annual rainfall data

Now what i need to do is for a strom return period of 2, 5,10,25, 50 and 100 year storms, plot the I value for each of these years (I have 6 A values and 6 ^c values) that corespond to each year 2,5,10,25,50, 100

## total derivative...

To find total derivative of a any given function in form of f(x,y,z)  , should I simply take the Jacobian of the function? If so, why does that yield a total derivative. As i understand, the total derivative is given in form of df = (df/dx)dx + (df/dy)dy which is not the same as Jf = [(df/dx1)   (df/dx2)  ....   (df/dxn)]

My example here is h(x,y,z) = (x + y - z, sin(xyz) + e )

thx for any help

## what wrong with my code?...

The question is“fsqFsHn sGGousG” is the result of applying a Caesar cipher to its original title. A 53-character alphabet
consisting of all the upper-case letters, a space, and all the lower-case letters
was used; consequently the space in the middle might or might not correspond to a
space in the title. Determine what the original title was.

>Alphabet:="ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz";

## Checking intervals...

Hi,

I'm having some trouble with finding an algorithm to check  which interval , the element 'x' is part of.

for instance : say I want to know if x belongs in , A := [ a, b ] or B := [c,d] or.....

How does one write the proper code for such a problem?

Yoeri.

## System of higer order ODEs...

How to solve the boundary value problem for this system of ODEs. I used solve DE Interactivly but that failed to get me an answer.

ODEs:=4/5*F(x)*T(x)'-1/5*F(x)'*T(x)=T(x)'',  3/5*F(x)'^2-4/5*F(x)*F(x)''=-F(x)'''+T(x)

BCs:=F(0)=0. F'(0)=0, F'(10)=0, T(10)=0, T'(0)=-1

## Programming and Saving Pictures...

Hello, I have a script in Maple that generates a function that I want to plot for many different values of one of its paramters. I was wondering if there is a way to construct a program that will make these plots for a number of different values for that parameter, and save these plots as JPEG files each time. for example, I want to be able to do this: 1- epsilon = 0.001 2- run program that generates function 3-save the resulting plot as a JPEG image called epsilon001 4- epsilon = 0.002 5 - run the program again ... and so on. Is there a way to do this in Maple?

## Fun High School Stuff - Animating Mathematics !...

Hi there !   The attached worksheet has exciting animations made entirely through equations that we are familiar with from high school. The worksheet has an animation of a bouncing ball. No longer do you need a \$500 camera to take photos to illustrate the sequence of motion - because Maple has that feature built - in !   Feel free to ask questions or add your worksheets to further develop mathematical animations.

## Decomposition in Primes of an ideal...

Hello everybody. I was wondering if I can do this with maple: Consider the ideal

## Solution of PDE with boundary conditions...

Hello, I have a question concerning PDEs with boundary conditions. Now, I am trying to solve this PDE to get final expression.

> PDE := diff(c(x,y),x,y)+A*diff(c(x,y),x)+B*diff(c(x,y),y)+C*c(x,y)+D  (A,B,C,D are constants)

the boundary condition are

> BC1 := c(0,y)=39;
> BC2 := c(x,0)=39*e^(-x);