My data file is a list, where each line is

[elm1,elm2,elm3,elm4].

I would like to read through and calculate the mean of all of the elm1's.

I would like to get a distribution of the elm1 data.  For example, in 800 lines of data, if elm1 takes on values 5,6 and 7, I want to know that there are 300 5's 400 6's and 100 7's.

stats[mean](data) needs the numbers inputted.  I even thought I could pull off the elm1's into a separate list, but stats[mean] won't take a list.

Any help is appreciated.

Hi Everyone!

I want to export several Figures with Maple at the same time. I tried

with(plots):

for i from 1 to 5 do
interface(plotdevice=ps, plotoutput=`c:/test||i.eps`, plotoptions=`color,portrait,

od:

but it did not work. How can I create one file per Figure?

Thanks a lot,

Bernardo

If I try to solve the following differential equation with simbolic parameters:

IC := p(0) = condizIni

ode := diff(p(t), t) = (QIn-QOut-derV)/((1/Boil+1/Bwall+percair/(m*p(t)))*V)

func := rhs(dsolve({IC, ode}))

the result I get from Maple12 have the following member inside it:

LambertW(_Z7, _Z)

but I do not know what are _Z7 and _Z.

Where I can find the expression of these parameters?

Why Maple added these parameters?

If x -1 is regarded as the difference of two cubes, can Maple factor it?

Alla

I like the feature that permits the use of the dotted derivative, as it has the look and feel of the work that I am doing. However, when I enter, say, (x_dot + 1)^2 and invoke the expansion, I get x_dot(t)^2 +...

It's nice that Maple knows that x is a function of t, but I would like to avoid the clutter. How do I suppress the (t) so that all I see is x_dot^2?

I use Maple 11. Sometimes, the result become more then one when it run. Then the results are same. How to make it to give difference result?

Thanks.

The attached work sheet teaches you the fundamental concepts behind the antiderivative.

The examples in this worksheet are entirely done in an interactive video tutorial - follow the link below:

 (Ctrl+Click on the link to view the video)

Antiderivatives - Video Tutorial

Enjoy!

The attached worksheet is a wonderful introduction to the concept of obtaining the area under a curve.

You'll see how easy it is to learn how to find the limit of the sum of a series using Maple.

An interactive video tutorial that shows you how to do Riemann sums really fast is linked below:

(Ctrl+Click on the link to view the video)

Riemann Sums...

 i have a project from my univercity an d i want to ask you how can i put maple into flash document so can you help cause i must give my project one month again thanx before

Can Maple graph the Dirichlet function?

f(x) =   {0,   if x is rational
            {1,   if x is irrational

Alla

How can i avoid this error?

that happens 'cause I have 3 different solution for Vv:

> Vv3:=Re(solve(eq1,Vv)[3]);

The following program was created to determine a Hermite polynomial. Can anyone see where the error lies? Thanks!

restart; f:=x-> (x*(cos(x)))- ((x*x(sin(x/2))));
                 f := x -> x cos(x) - x x(sin(1/2 x))

                              fp := D(f)

I am trying to modify a solution to a non-homogeneous boundary value problem presented in Dr.

Hi everybody, one thing is not still clear to me about assume: for example  I have to find the solution of this simple equation:

e1 := q=ks*h^(5/3)*sqrt(If);

If i write solve(e1,h);   I get also all the complex solutions. I want just the real solution so i wrote:

assume(h::real);
solve(e1,h);

but I still have all the complex solutions. Why? I tried also  with assume(h::real,h>=0); but it's the same.

thanks
 

alberto