Hi all,

I'm editing a scientific document in Maple document mode. I'd like to assign a mathematical result to a variable, which is a 2D-math expression.

An example:

I'd like to assign the result of

to the expression

Just a small issue with how you insert a ^ (caret, wedge, circumflex, arrow, hat, what have you), / (forward slash), or * (star, asterisk) as a literal in a comment in Maple.

In regular code, it works fine;

Typing \_ produces _
Typing \^ produces ^
Typing \/ produces /
Typing \* produces *

In a comment, only underscores work as expected.  The caret, asterisk and slash leave behind the escaping backslash, which you will have to go back and delete yourself.

I was writing problems about the bisection method and decided to use the Maple routine Student[NumericalAnalysis][Bisection].  The problem I wrote generates a cubic with all three roots in a somewhat random interval.  Students are then asked to find a root to a given accuracy using the bisection method.  If one does not hit a root, the Student[NumericalAnalysis][Bisection] routine gives the desired answer.

A problem arises when the bisection algorithm...

I'm seeing strange behavior when I try to numerically solve the heat equation with radiative boundary conditions (heat flux proportional to 4th power of surface temperature).  I set up a simple example of a plate that sees 300K on one side and 310K on the other.  Two obvious flaws in the solution of the radiative example are that the slope of the curve always has the wrong sign at the left boundary (sometimes wrong on both boundaries), and that the solution runs away...

Let a:= (2x-1)/sqrt(1-4x²)  , b:=sqrt(1-2x)/sqrt(1+2x)

then c:=combine(a/b,radical,symbolic) is 1, it should be -1 !

(Multiply b top and bottom by sqrt(1-2x) to see this).

Am I misunderstanding combine?

It's possible for a user to set many defaults within a Maple session. One feature I do not see how to customize is the "point probe" tool. In earlier versions of Maple there was only one mode, and the coordinates of the cursor within a 2D plot were displayed in the context bar of the Maple window.

Now, there are several different modes for viewing coordinates within a plot. By default, the point probe shows nothing about the current location of the cursor. To change the point probe for one plot, right click and select Probe Info from the context menu, then choose one of "Cursor position", "Nearest datum", or "Nearest point on the line".

This has to be repeated for each plot.

Is there a way to set the default?

This works only when the plot "Manipulator" is set to "Point Probe". If it's set to Pan or Scale, this needs to be changed via the icons on the plot toolbar or through the Manipulator entry on the context menu.

Along the same lines, is there a way to set the default Manipulator to Pan or Scale?

Relevant help pages are worksheet,plotinterface,pointprobe and worksheet,plotinterface,manipulatormenu

If not, these would be nice features to have added for Maple 15.

sorry for this funny question, but where is the "Print Preview" command, it is not under File menu anymore and the export to PDF function is also missing... What am I doing wrong?

running Maple 14 under Max OS X, SL.

cheers.

:-)

I played aorund a bit with the "Insert Table" command and it seems to create just an inert object that cannot be accessed or operated upon except directly by typing into its boxes. Is that true? Is it just for word processing?

why won't VectorCalculus[Jacobian] accept vectors?

... to prevent me from frying my system? or is it an unnecessary restriction?

Here's what I mean:

Fvec := Vector([x[1]*x[2],3*x[3]]);
Xvec := Vector([x[1],x[2]]);
Flst := [x[1]*x[2],3*x[3]];
Xlst := [x[1],x[2]];
VectorCalculus[Jacobian](Fvec,Xlst);
VectorCalculus[Jacobian](Flst,Xlst);
VectorCalculus[Jacobian](Flst,Xvec);

Error, invalid input: too many and/or wrong type...

How do you enter h in a Euler's method problem? I need to change h=0.1 to h=0.05

I'm using the 2D input in Maple 14.

So far I have this:

> DE2 := diff(y(t), t) = 3+t-y(t);

> Euler(DE2, y(0) = 1, t = .4);

> Euler(DE2, y(0) = 1, t = .4, output = Error);

> Euler(DE2, y(0) = 1, t = .4, output = information);

Hi all,

When I solved:

restart: mu:=solve(h*sin(mu*b)+mu*cos(mu*b)=0,mu,AllSolutions=true);

where b and h are constant, the solution is:

                                                    ...

I need to differentiate a postion vector with respect to time and extract the theta dots in the following http://img543.imageshack.us/img543/3079/positionvector.jpg

Many Thanks

How can I plot this piecewise function:

for j from n-1 by -1 to 0 do

... does some processing that's not really relevant to the question:

s[j] := evalf(a[j]+b[j]*(t-x[j])+c[j]*(t-x[j])^2+d[j]*(t-x[j])^3)

end do;

S := t-> piecewise(

x[0] <= t and t <= x[1], s[0],

x[1] <= t and t <= x[2], s[1],

x[2] <= t and t <= x[3], s[2]);

My friends all...

Hello!

I have a question about array/Array, as the picture illustrated, if applying a function to the entries of an array or Array, for example, map, then the results which maple yields lack of commas, as we can see, each entry in array/Array is so close and if the entries are very complex, then a confusion will be easily caused.

Is there any way to conquer it?

Hey peeps

I'm quite new to maple, and to this site, so I hope I do this properly.

I'm trying to make a procedure, that througout the procedure divides 2 numbers. But I need it to round down to the nearest integers, at all time, as I need an integer as output. I have searched quite a lot, and haven't found anything that helps me to do this.

The procedure is the following:

walla := proc (x) local y, z, w;

y := x;