Here is my problem. I have some data in excel format organized in three columns of x, y, z values. I am able to import the data in maple via the assistant tool and create a 3d surface plot. Now I would like to create a 2d contour plot on the x-y plane and possibly put the 3d surface and the 2d controur plot together. Do you think this is doable without changing the data format? I have looked for other posts, but none of them seems to highlight the data format problem. Thanks in advance, regards, Man

I have a dataset list of points, representing location x,y and one for depth z. 

x:=[...]
y:=[...]
z:=[...]

What command is best for plotting a 3d surface out of those points?

All:

How do I make a 3D plot of a volume that is created when a planar surface is extruded in a direction that is peripendicular to the surface? 

For example, a plot of the volume that results when the region between x^2 and the x-axis from x=0 to x=2 is swept vertically in the z direction 5 units. 

Thanks,

Phil

Now I am using a method that kept trying polynomial to check whether it is primitive. This method works fine for not very large Galois field. But for large one, like GF(2^1024) or GF(2^2048), it is pretty slow. Is there a way to quickly find ONE primitive polynomial in GF(2^1024) or GF(2^2048)? Just one, not too many. Thanks Gepo Method I am using: findprim := proc (n, deg) F := NULL; i := 0; while i

Hi,

I try to calculate a contour integral(in fact it is the contour integral defined in the principle argument theorem) with a function that was given in my earlier entry here

y:=2.0;W:=(2^(z+3/2)*Pi)/(GAMMA(-z/2)*GAMMA(1/2-z/2)):V:=1.0;
  f:=1+((abs(V))^2/W^2)*(CylinderD(z,y)^2)*(CylinderD(z,-y)^2-CylinderD(z,y)^2);
 

I try to use this f in this contour integral as:

phi:=t→exp(I*t);

g:=(diff(f(phi(t)),t)/f(phi(t))) * diff(phi(t),t);

here I give f ` (z)/f(z) is g. And

 

Hi

I am trying to define a funciton I'd like to call approx3f that calculates the taylor expansion of a function f(x) around a point "a" up to 3 terms.  So i want this function to be able to recieve a funciton f(x) and a parameter "a" as its input.

I wrote this:

approx5f :=(f,a)-> f(a)+f'(a)*(x-a)+1/2*f''(a)*(x-a)^2

but i think my definition is wrong cuz it doesn't work.  How can i make maple understand f is a function and then input "a" in it and its derivatives.

I input into MAPLE the following differential eq & it returned that it is classified as an Emden-Fowler Differential Equation:

r^2*F"+1/r*F'-k^2*F=0   where F is a function of r

MAPLE was able to generate a solution.  I am attempting to figure out how this eq is actually solved & I typed in Emden-Fowler into the SEARCH window on this website & got ZERO results.

Is there a general template to follow for extracting scientific data from a website? 

Hi all,

I was wondering how I would introduce the generalized hypergeometric function command in maple ? This is  like HypergeometricPFQ[ {{1 - \[Nu]/2}, {1}, {1, -(\[Nu]/2)}}, {{2, 3/2}, {}, {1 - \[Nu]/2}}, z^2/2, z^2/2]  in Mathematica but when I try to give it in maple I get error messages...

Thanks!

Hi guys! This is my first question in this forum. I'm a newuser so forgive me if my questions are really basic.

I wrote a non linear system with a number of unknowns and I want to find solutions for a set of values attached to x.

Let's say x:=[0.1, 0.2, 0.3]

I know I have to redefine x:=i and write a "do" command like

for i in x_   do s(i):=fsolve({independent equations},{unknowns to be numerically found})

and i have three sets of solutions s(0.1), s(0.2) and s(0.3)

i want to get compute the extended Euclidean of two polynomials and now I am using gcdex, but it takes too much time for big polynomial. For example: alias(a=RootOf(1+z^31+z^23+z^11+z^7+z^2+z^32)); gcdex(x^32,x^32+(a^15+a^11+a^6)*x^31+(a^13+a^10+a^3)*x^23+(a^11+a^7+a^2+1)*x^11+x^7+a^13+a^10+a^3+a^1+1,1,x's','t'); Is there a better way to do this? Thanks Gepo

Hello,

I am using Maple 13 under Linux and cannot seem to plot.  I get a message like

Error, (in plot) type `has_unit` does not exist
 

Furthermore, the Table, Plot, Drawing and Spreadsheet menus are greyed out so I cannot access them.  How can I rectify this?  Are these features disabled for some reason under Linux?

I have to write a program that takes a plain text; that characters are represented on 5 bits. My information vector is of the form W=[a,b,c,d]. the sent vector is of the form C=[x,y,a,z,b,c,d] where x,y,z are parity check elements. I don't know how to get my W

Hey everybody,

I have what seems to me like it should be an incredibly easy question.

In Maple I have a function u(t). What I need to do now is determine the value of t at which u(t) is equal to some already-known value. It seems like it ought to be incredibly easy to do, but I really have no clue how to do this.

Any help would be greatly appreciated!

 

I have Maple 13 that I got with my student license, I am thinking of re-formating my computer, Win7. Do I need to de-authorize Maple first? or what do I do?