The pyramid is the standard simplex in 3D with vertices (0,0,0),(1,0,0),(0,1,0) and (0,0,1). Ie it's the convex hull of these 4 points. Because Maple does not have "convexhull" plot command for 3D objects, so instead one has to plot a pyramid.

 

My commands:

                            with(plots);

 ...

Hi i have difficulty to obtain the function of theta(eta) and diff(theta,eta) form the matrix. Every time i have to take the values from the matrix inorder to make the function of theta(eta) and diff(theta(eta),eta) which is very difficult.

Can you please make a code in MAPLE so that i may get the direct fuction of theta(eta) and diff(theta(eta),eta)from the matrix gernerated by MAPLE.

i WILL WAIT FOR YOUR QUICK RESPONSE.

Hello everyone,

 

  I have a file, e.g.'helloworld.txt'. It cotains

 

hello 3 5 7
world 1 2 6

 

 If I use

  L1:=readdata(`D:\helloworld.txt`,3):
print(L1);

 I just got a "[]"

 

How can I get the data from the file which has many word?

 

Thank you very much in advance

 

The MRB constant can be computed in Maple by evalf(sum((-1)^n*(n^(1/n)-1),n=1..infinity)).

On my laptop restart; st := time(); evalf(sum((-1)^n*(n^(1/n)-1), n = 1 .. infinity), 500); time()-st gives a timming of 37.908 seconds.

Using the procedure posted at the bottom of this message st := time(); A037077(500); time()-st gives a much faster timing of 1.903 seconds.

My fastest timing for 500 digits of MRB comes from my...

Hi guys, my Maple version is 15.01, when I want to do the following plots, the Maple pops up this failure "Kernal Connenction Lost":

Here're the corresponding input commands:

J := u -> evalf(Int(1/(sqrt(x^2+u^2)*(exp(sqrt(x^2+u^2))+1)), x = 0 .. infinity));

plot(exp(-2*J(Delta/(.4))), Delta = 0 .. 1);

Does anyone encouter the same problem if you try the commands? I wonder how to fix it, thank you.

 

F := [x1/(1+t^2)+x2, -(x1+x2)*(1+1/(1+t^2)), -x3];
rho1 := [diff(F[1],x1),diff(F[2],x1),diff(F[3],x1)];
rho2 := [diff(F[1],x2),diff(F[2],x2),diff(F[3],x2)];
rho3 := [diff(F[1],x3),diff(F[2],x3),diff(F[3],x3)];
theta := Matrix([[rho2, -rho1, 0],[rho3, 0, -rho1],[0, rho3, -rho2]]);
with(LinearAlgebra):
with(linalg):

evalm(theta&*Matrix([[M1],[M2],[M3]]));

Find M1 M2 M3

Answer is
M1 = [-1, -1, 0]
M2 = [1, 0, 0]
M3 = [0, 0, -1]

Let G be a connected undirected graph. How to find the minimal set of the edges of G, such that its annihilation transforms G to a planar graph, with Maple? The procedure should work with big graphs.

I want to integrate the following two function using Maple, but it returns nothing

When I use ImportMatrix to import a MATLAB mat file, I get a list of names and values. Should I write a "for" loop to assign them in Maple or there is an easier way to do it?

I have obtained the taylor series expansion of a function and got the coefficients as numbers.

I want to assign those coefficients to a variable.

I need your help.

Hello,

I'm quite new in Maple and stuck at one point. I think it is a trivial but I'm stuck anyways and hope somebody could help me here.

Following the DE system i'd like to be solved.

I am trying to determine if a particular system of 15 polynomial equations in 9 variables has a real solution using Maple's RegularChains library.  I am using the IsEmpty command which returns true if there are no solutions and false otherwise.  In Maple 16, this can be done using the command:

IsEmpty( sys, R ) ;

where "sys" is a list of equations and "R" is a polynomial ring, both of which I define in the worksheet.  But this syntax only works...

I need to keep parentheses surround some expression, e.g. (2x+1). However, Maple removes parentheses. Is there a way to keep them?

is there a maple function or does anyone have a proc that will return the number of significant figures given a number? For example, when given 0.38, the proc will return 2, or when given 2.897, the proc will return 4.

Hi all. I am trying to find the cube roots of -sqrt(6)-sqrt(18)*I in polar form. I have used the following commands but it does not convert the argument properly. Can anyone help? readlib(polar); sola:=solve(z^3=-sqrt(6)-sqrt(18)*I,z); polar(sola[1]); polar(sola[2]); polar(sola[3]); I have also used the following but it could not simplify the argument/angle. sola1 := simplify(convert(sola[1], polar)); Can anyone please suggest a fix to this? The argument...