I already asked this, but I still am not sure how to perform it, so here I'm again :-). I already read http://www.maplesoft.com/support/help/view.aspx?path=Define_external

Say I've got that mat_mult-Funktion like in the example in that link written down in a file called "code.c".

What now? Do I have to compile it? (Do I really need a .dll?)

Thx in advance for your patience!

Hi:

In some application I end up with maple-generated expressions that cover several pages. Things would be much simpler if I could define abreviations for lengthy expressions and express all subsequent results with their help. Some of that can be accomplished by alias and algsubs but not all of it. Anyone has any suggestions?

takes a lot

dimitrios

I'm trying to plot multiple feasible reagions of an linear program (which are defined by H] and H2, see below) into a single (!) plot using plots[inequal] as follows:

It is a naive question,but i can't find a way to make the axes of a plot bolder (I use Maple 12)..

Is there a way to do it??

thanx a lot!

 

 

Hi,

I'm new here and was wondering if anyone could offer me some advice on some work I'm doing.  I've written some code in Maple to generate images of fundamental domains in Hyperbolic 3-space, but in order to get the necessary results, I have to do some convex hull calculations.  Currently I'm using qHull for this, which works well, but outputs its results in the form of a text file, reading in the following format:

I have a series of points on the plane. I want to find an analytical function, which describes the curve drawn from these points. How can I do that?

Hi,

My equation is  Y= m.Y^3 + n. B

y: (-1..1) and  B: (-60..60)   have this values.

How can I fit the m and n parameters by using maple7?

And also how can I plot  Y(B) ? Thanks.
 

Regards,

Bengu

 

how is it possible to identify the independent variable that maximize(or minimize) a function?
is it important to know the kind of the function?

Is it possible to specify the independent variable that maximize a function just via it's plot?

 

for example If I have a list for A:= [ A, B, C ]:  what command should I use to get the list

displayed with font times roman and size 18 when A is called   ?

 

hi friends!
I have a 2*2 matrix(namely Mcell), whose elements vary as a complex function of "nu".
for each cycle of a "for" loop, h[j] := abs(Re(Mcell[2, 2])), whose diagram is periodic and has many crosses with y=1.
i just wanted the first two points(their difference) and used

L := Roots(h[j]-1, nu = 1 .. something, numeric); and
w[j] := L[2]-L[1];

in a "for" loop.

i check the answer, they are all true(w gets 20 values in 20 iterations).

Hello,

After applying "solve" to an equation system with lots of sin, cos etc., the result looked very unreadible for my non-math-eyes...basically, a lot of RootOf() and _Z4 expressions...The equation system has 6 variables rot_x1, rot_y1, rot_z1, rot_x2, rot_y2, rot_z2 and I have solved for rot_x1, rot_y1, rot_z1

...I then applied convert(answer, radical) and it looks like this, which is something I can understand  - a few fractions and root-signs etc...(see pic attached)

Question 1: Is it ok to do this conversion or do I lose some solutions without knowing it??

Question 2:

I then tried to eval the converted answer by assigning rot_x2, rot_y2 and rot_z2 with values....Actually, I expected that the result would be easy-to-read values for rot_x1, rot_y1 and rot_z1, but instead I get  something with roots and "signum" which I dont really understand (esp. the signum)....Therefore, I applied convert(piecewise) to it....Does that make sense what I just did???....Can solutions go lost or change when i apply the "conversion" function?????....

THANKS for any help....and sorry, I know I should better improve my Maths, but I guess there is no time for this atm...;)...

         
 

 

Hello,

I need to solve a system of ode in matrix. I've been trying with the proc instruction for three days, but it doesn't work! (I'm quite new into Maple).

My system as the form:

M*y'' + C*y' + K*y = F.

M,C,K are matrix of (n*n) (n is between 2 and 200 depending of the problem). y is the unknown, a vector of n degrees of freedom depending of time. F is a Vector of n components.

I've try with:

Hi, would anyone mind explaining the use of k:=op(J)[1] in this code below. 'Int((3*polylog(5/2, -exp(b*(u-i)))/b^(5/2)+i*polylog(3/2, -exp(b*(u-i)))/b^(3/2))*r^2, r = 0. .. 10.)'; J:= convert(%, rational); K:='op(J)[1]'; with(codegen); makeproc(K,r): KK:=optimize(%, 'tryhard'); 'Int( KK(r) , r=0.6 .. 10, method = _d01akc, digits=8)'; evalf(%); Thanks MS

Hi, I need to put a 2-dimensional quadric (given as an equation including x's & y's) into normal form. How can I do this? I skimmed through the Geometry/2D-Euclidean directory of the Maple help but didn't find a solution.

Thanks in advance.

Hi,

I am an absolute beginner with Maple and am appreciating any help.

Basically, I want to use maple because it can deal with algebraic expressions. For example with Matrixmultiplication I don't just want to see the final result, but also I want to see the algebra behind each matrix element. 

So I have defined the following 2 matrices :

rot_x := matrix([[1,0,0], [0, cos(alpha), -sin(alpha)], [sin(alpha), cos(alpha), 0]]); 

rot_y := matrix([[cos(alpha), 0, sin(alpha)],[0,1,0],[-sin(alpha), 0, cos(alpha)]]);