Hi everybody:

I have an application that requires the following:

a) perform integration of a 2D function over a triangle;

b) perform integration of a 2D or 3D function using different orders in each direction.

Other than writing your own procedures is there a way to do that with Maple? And if you have to go down that path, could you somehow utilize the weights and stations of integration which are hardwired (I assume) in Maple? And in so doing save your self the effort of typing long streams of numbers.

 

thanks a lot

Maple People,

I've been trying to work out a procedure for a friend for a couple days right now and I'm totally stumped. It's just a maple syntax thing.

Given a set like:
S:={X(t)^2+Y(t)^2=1,2*X(t)*diff(X(t),t)+2*Y(t)*diff(Y(t),t$2)=0}
how can I determine the ''highest t-derivative'' of X(t) (or any other of the functions).

That is, the highest t-derivative of X(t) in S is diff(X(t),t)
... of Y(t) in S is diff(Y(t),t$2)

I can't seem to get any relevant information by doing:

> f:=diff(X(t),t);
d

I need to delete certain components of a vector, I know if it was a matrix I could use DeleteRow and DeleteColumn but it does not work for a vector, how can I do that?

e.g.

A:=<2,10,5,7>;

n:=2 (delete second component) ??

A:=<2,5,7>

 

Hi, I am working on a complicated expression. For the matter of simplicity, I want to define some new variables in order to express it in a more concise form. For example, where ever I have p^2/q^2, I want in to be replaced by a new defined variable like s, which is defined the same, i.e. p^2/q^2. So an expression like p^2/q^2 + 3 will turn to s+2. Please let me know if maple can do it, and if yes, how? Thanks, Hamidreza

Hi everybody:

I have a bilinear form, that is an expression that may be written down in the form

Rowvector(1,n)*Matrix (n,m)*Columnvector(m,1)

and what I like to do is extract the Matrix(n,m) from it.

One way of doing that is take the derivatives of the expression in terms of the components of the two vectors. However, in my view coeffs should work as well. The problem is I don't see how the returned results are sorted out based on my supplied list, e.g.

Hi,

I've got a weird problem and I can't understand why.

When I use BooleanSimplify for a really big expression, e. g.

Hi

I work with rather long expressions, expecially fractions containing "good" functions, like power or sqrt.
They contain also some contants, over whick I made assumptions like

assume(M::real); additionally(M::positive):

It happens very frequently that when I go further in my calculations, doing simplifications for ex, I get finally expressions which still contain the constant M, but for which

has(%, M)

How can I use subscripts in functions?  I can define an equation such as A₁=B₁+C₁ fine.  But when I type in  A₁:=(B_1,C₁)->B₁+C₁ , I get "Error, invalid operator parameter name".  What gives?  Any work arounds?

Ratch

I've got a set of Mathematica notebooks written by my co-author which I was thinking about translating into Maple worksheets (we also have a Matlab version of the same simulations so I thought it would be fitting to have a set of Maple equivalents too)... until I realized it may not be all that simple. Does anyone have prior experience using the MmaTranslator?

Good Morning,

How do I do a linear interpolation in Maple if I have the following list below

v := 1.7 is the value in R

R := [1.0, 1.5, 2.0, 3.0, 5.0,10]

X := [1.87, 2.11, 2.31,2.63, 3.04, 3.53]

c1 :=BSpline(R, X, v) (Is this correct) because I did not get the expecting X value

Please Help.

Regards

 

I have been working on a problem related to and using the famous Hadamard-Weierstrass Factorization Theorem (HWFT) for representing an entire function, E(z), with pre-defined zeroes, a(n), which go off to infinity. From HWFT one can represent any meromorphic function with pre-defined poles and zeroes as the ratio of two entire functions.

I am not interested in creating an entire function, but a function F(z) analytic on a disk centered at a pre-defined point such that the analytic continuation, A(z), of F(z) equals pre-defined values

I have a loop that generates a vector:

for i to 5 do

eqn[i] := i;

end do:

 

I then want to print the vector so it looks like this:   eqn = [1, 2, 3, 4, 5]

eqn;    just prints the word eqn

Hello I am hoping someone can help me find a solution to this equation with MAPLE. The solution (sol) comes out as a rootof structure with constants numbered C1 to C8 (see input below,try yourself and see format of sol). I don't know how to simplify this rootof structure and find the values for the constants that i want. I know that C2=C3=C5=C7=0 but I need to find C1, C4, C6 and C8. Can anyone help me find the values for these constants when the boundary conditions are such that f1(0)=f2(0)=f3(0)=0 and f4(0)=(r1+r2+r3+r4)/r4 . Thank you very much. > restart; Digits := 10;

Hi, I am a Maple newbie. My problem is I have implicit function in two dimensions and want to calculate the surface area of it. It is not possible to calculate the explicit representation of that function. Does anyone has a suggestion?? Thank you, Flo

hi all my 1th post i am rookie , and finishing of the subject is hard for me ! i hope a gentleman show me how can i draw a Huffman tree in maple ! it is a great template for me ! this is a good reference that contains some code too ! http://www.cs.tut.fi/~albert/Dev/pucrunch/packing.html sincerely Fereydoon Shekofte many appreciate and regards :-)