I am having trouble trying to perform some of the computations listed in the Maple Advanced Engineering Mathematics E-book.  I directly copy and paste the text into my worksheet but Maple does not compute the answer as shown in the e-book.  It simply rewrites what I copied in a different format.  For example I'll write:

simplify(CrossProduct('A' , 'E') ) ;

Instead of computing the answer it just rewrites my input in a differnent way like this:

=CrossProduct((cos(p)-psin(p),-2sin(p)-pcos(p))

Dear Experts,

I want to solve 2 workssheets with NPL Solve with Maple 12.

But how is it done? In worksheet 1 I always get this error. Unless I have solved this worksheet one err I can not continue wrking on worksheet two.

Thnaks for help

Walter

can someone please tell me why maple says that x=root(x^2+1)/x=.5root(2+root(2)) please someone help, or even better that why does arcsin(1/x)=arctan(x)=>x=-root(-2+root(20))/(-1+root(5))???????

Hi,

I want to solve the following inequation: solve( -a + sqrt(a^2 - 4*x) < 0, [x]) assuming a>0

the result from maple is: x < 0, (1/4) a^2 < x

which is wrong!

anybody can tell me why?

Thank you,

CN

Hi, I am defining a matrix this way: m := Matrix(2, 3): But I don't want zero value to be assigned by default to its elements, instead I want to have them as just m[i,j] and not zero. Please tell me how I can do that. Thanx,

Is it possible to print a hyperlink to the worksheet (programatically, not by clicking menu)? In Maple 13 worksheets are errors and warnings displayed as hyperlinks to web.

 

I have designed a Maplet that can load time series data from any selected csv file (data organized in columns) 

and plot such a time series with the help of a Dropdown list. I think such a functionality is something Maple is missing.

I would like to have a simple button in the Maple original meny where you can load such a maplet from.

However , the maplet still have some problems which I was wondering if someone could help me iron out :-)

I have attached the worksheet.

 

Hi, I want to construct a general 3 by 3 matrix, but its form is symmetric. How can I do that? As the result maple must consider a[1,2]=a[2,1] in calculations afterwards. Thank you,

Hello,

I wanted to use the Split command of StringTools package and I realized that it is different from the Split command in Visual Basic.

In VB one can give a third argument to define the maximum numbers of splittings:
For example : in Visual Basic returns the array . , i.e.the function splits the string at the first occurrence of the ":".

It would be useful the improve this command in Maple to have this possibility.

By unexpected, I mean unexpected to me, of course.

The following substitution fails:

> A := y*(f[x]-z)/(f(x)-y);

> subs({(f[x]-z)/(f(x)-y)=lambda},eval(A));

but if I replace the multiplication by an addition, the substitution works:

> B := y+(f[x]-z)/(f(x)-y);
> subs({(f[x]-z)/(f(x)-y)=lambda},eval(B));

Or if I simplify the expression, the substitution also works:

> C := y*(f[x]-z);
> subs({(f[x]-z)=lambda},eval(C));

How come? Is there a way to make the substitution sought into A?

Good Night all:

Anybody could tell me how can I obtain this integral with maple?

int(x^s*exp(-1/2*(x*(1+k)+exp(-x))), x = -infinity .. infinity)

I am trying to solve the following problem numerically

diff(u(t), t) = u(t)^4-u(t)+1

I am getting the following message:

cannot evaluate the solution further right of .41669147e-4, probably a singularity

Appreciating any help

Hello, I am new here and hope to post in the right section. I am encountering a few problems with learning myself how to construct larger maplets. The first problem regards the simple enabling / disabling of a button with a check box. See the example code below. If the checkbox is selected, I would like to have the button enabled, and if the checkbox is not selected, it should be disabled. Simple as that, but I can't find out what I need to do to get the code working. The 'CB1'('value') statement is not of the correct type??

Hello Everybody I am very new to Maple and have a problem that I need help to. I have an equation and a plot in Maple that I need outputted to Excel for plotting in Excel. Is there any way to output the relevant x-y coordinates to a data file so that I can plot in Excel or can I directly output the x-y data straight into excel? Here is an example of the last few lines of Maple code. What lines of code should I add to this to get what I want? > t := .15; > r1 := 5;

I have the following problem with MapleTA 4.0

Some users have registrered themselves in more than one class, by mistake.

How can I delete such a registration?

Arne Jensen

Aalborg University