hoping someone can help me, one of my exam prep exercises asks the following

"

Consider the equation x^2+y^2 = 2+cos(x)*sin(y). Transform the equation into polar coordinates
using the ”subs” routine, and plot the resulting equation in polar coordinates (read the helppages
of plot to find the syntax for polar plots). Evaluate an appropriate integral to find the
area enclosed by the curve.  "

I did the conversion and plotting by

I have always preferred the notation  for the derivative of

Hi all,

I have this two equations:

ap[k]=Sum(a[n]*sin(n*theta)*f(n,k),n=1..nn);

a[n]=Sum(ap[k]*g(n,k),k=1..kk);

Where ap[k] and a[n] are the unknowns.

I want to convert the two equations in the Matrix form A*X=b to solve it numerically and where X=[ap[k, k=1..kk] and a[n, n=1..nn]] and A the matrix with a rand (nn+kk,nn+kk) the coef and b the second member and a vector (nn+kk)

Thank you for any help to do this with Maple

Hi everybody,

I've got a 3d maple plot which I would like to export to a 3d cad format. There are a couple of file formats and I do not want to narrow that to one (autocad, catia, solid edge, proEngineer ...)

If this is not possible: is there any file format which I can export to, from which with a third party tool it is possible to export to 3d cad file.

Thank you

Harald

http://www.tiny9.com/u/Math5543

Fun interactive paradox about the MRB constant.

Comes with free Mathematica player.

I want to use the poset package on Maple 14 but am having trouble installing it. Could someone give me a heads up.

Thanks

Dear friends,

Here a toy version of my problem. I would like  to write several equations and to export all of them to latex. It consist

in three steps

FIRST  I would like to generate for

j1=0..2:

j2=0..2;

j3=0..2;

the equations(for all the combinations of j1, j2 and j3):

assume(a>0, b>0, c>0, d >0, Qs >0):

j1*a + j2*b + j3*c + k/d*X1 = Q1

I am unable to solve the following differential equation for u(t). I right-click and select Solve DE but it gives me an incomprehensible solution. Kindly tell me how what to do:

diff(u(t)^2, t, t)+`&x`(`&x`(alpha, u(t)), diff(u(t), t))+`&x`(beta, u(t)^3) = 0

The same equation in "String" notation:

"2*diff(u(t),t)^2+2*u(t)*diff(diff(u(t),t),t)+alpha*u(t)*diff(u(t),t)+beta*u(t)^3 = 0"

The same equation in D notation:

Hi, every body

I have a problem for 4 month ago. This problem is the label in figure. i want to put at label any experssion such as

x*, or x_r or line above x  so on ,

please please please help me

it is a good idea if you provide maple sheet to make it easy understand how use it

Hello,

I have a transcendental equation

equ := 2+(s+1)*exp(tau*s) = 0

where s is a complex variable,and the range of tau is tau = 0 .. 1, I want to plot the trajectory of every roots,namely,s, in a complex plane according to the variety of tau. I try to use the command implicitplot, but get a curve in real plane.

Can you help me?

Best regards.

Hello (again),

is there a possibility in MAPLE to draw multiple plots on a e.g. 2x2 grid (see image below). In Gnuplot this is feasible with the multiplot option? Is there a MAPLE equivalent...

Regards,

Tobias

Hello,

i'd like to fit data of a Matrix M with M[x][y] = z(x,y) to a general parabola of the form: z=a*x^2+b*y^2+c*x+d*y+e

I'd like to use the statistics[Fit] package. Reading the documentation this should work but it doesn't

Please try the following code as example:

with(combinat);
with(Statistics);
M := randmatrix(5, 5);
XYValues := convert(sort(permute([seq(1 .. 5), seq(1 .. 5)], 2)), matrix);
ZValues := convert(Flatten(convert(M, listlist)), vector);

phone_code_mprime.mw

given 2 pools of letters, i need a procedure to select from the list of 2 letter permutations the appropriate candidates (that are in the correct order).

permute produces a lot of candidates, but i need an english word formed in the correct order.

attached file should explain

thanks

i need to calculate the radius of an arc. i have that the chord lenght is 96 inches and the distance between the chord and the arc is 6 inches perpendicular from the center of the chord. assuming that i am working with a circle.... how do i calculate the radius of the circle????