I'd like Maple to simulate airflow over a specified vehicle shape, and get it to display something similar to this.  ...

arghh.  Can't get pictures to paste, sorry.  So far I've never been able to insert a picture, haven't had the need and so haven't worried about it and now when I want to insert a picture, it's not just a straight forward thing.  Any help with that would be apprecited. 

Hello all,

Am a very new Maple user (installed today), so please bear with me! I need urgent help with the following:

I am trying to simulate polymerization of PMMA and have the following problem:

(1) I have Temperature-time data, measured experimentally.

(2) I want to fit my model which gives me a relationship between the rate of change of temperature (dT/dt) and the temperature in terms of a number of parameters:

dT/dt = Q*[Z*{exp(-E/R*T)}*{a^m}*{(1-a)^n}*{1-a}]

where,

a = P/Q + a0

Here,

Hi all first time posting on mapleprime so be nice ;) I can't seem to increase the font size of the numbers at the axis. If this is possible how do i do that? - moL

> restart; with(DEtools); with(plots); > eq := diff(y(x), x) = x^2+y^2; > S := solve(eq, diff(y(x), x)); > P1 := DEplot(diff(y(x), x) = S, y(x), x = -1 .. 1, y = -1 .. 1, colour = red); > display(P1); That is what I have so far, but now I need just the slope field corresponding to the initial condition y(0)=1. Any help you can give would be very much appreciated.

How to achieve that Maple, decompose the equation:  
 

Diff(x,t,t)+3*Diff(x,t)^2+5*x=1;
                        / 2  \            2          

Hi all,

I am helping a friend on this. We would like to evaluate the
convolution of

f(x)=exp(3 * x) / (1 + exp(x) ^ 5).

However, in Maple and Mathematica, using symbolic calculations, after computing the integral in closed-form, the
convolution results in numerical oscillation (lots of spikeness). We
don't know why. We just couldn't get rid of the spikeness.

Say I have the following procedure:

testproc := proc(x,y)

print(x);print(y);

x:=y;

print(x);

end proc;

And I input the following:

testproc(6,10);

Why doesn't this work? I want x to be assigned the value of why (ie, x:=10).

Hello,

I am using dsolve numeric in a for loop to run some multiple simulations. However, it looks like I get some errors due to using dsolve over and over again in the for loop.

Is there a way I can clear the memory or parameters in dsolve before proceeding to the next iteration?

Thanks,

Folarin

Hi,

++++++++++++++++++

A:=Matrix(3,3);

 

ExportMatrix("A",A);

 

save A,A2;

++++++++++++++++++

 

Both 'A' and 'A2' are saved  in the same folder as the worksheet,

how can I save/ExportMatrix in a sub-folder (if folder dose not exists, creat automatically)?

 

 

Thanks.

 

casper

Hello,

Please can anyone tell me if it is possible to run an executable from the Maple worksheet and how this maybe done?

Thanks,

Folarin.

How can I check if an assignment already exits?  I have a process that assigns an eqn name to the coefficients of a polynomial.  I have a number of different of polynomials that I want to do this assignment.  I have the following process:

> EqnCoeff := proc (Poly)
local n, k;
global EQN;
n := degree(Poly);
for k from 0 to n do
EQN[k] := coeff(Poly, phi1, k)
end do
end proc;

(my polynomials have indeterminate phi1)

Hi

I'm trying to use maple on a Dell with intel video chipset series 4, on a Fedora 11, and I get corrupted 3d graphics. I read this FAQ http://www.maplesoft.com/support/Faqs/detail.aspx?sid=33530

(point 3) but it seems that no solutions exist.

I'm using the intel driver, this is the sheet of xorg.conf

 

Given 3 cylinders:

x^2+y^2=1

x^2+z^2=1

y^2+z^2=1

How would I go about plotting the intersectioin and only the intersection?

Thanks you!

I was wondering is it possible to make a procedure in maple that works out the Bisection, tri section using a single procedure?

So for example for the bisection method c : =( a + b ) /2
fAnd  trisection method c : = ( 2 * a + b) / 3 and d : = (2 * b + a )/3 etc

For n th section L [ i ] :=( i*b + a ( n - i ) ) / n:
` i ` represents the position in a List.

e.g (Not sure if it would work in a proc)
Trisection
n:=3:
i:=1:
L:= [ c , d ]:

L[ 1 ]:= ( b + 2 * a ) / 3:

How would I express cos(2x+(Pi/6)) in the form Acos(2x)+Bsin(2x)? Also I have plotted y=(x^2-4x+5)/(x-2) I need to mark vertical, horizontal or oblique asymptotes with a dashed line. Determine the location and nature of any turning points. Does anyone know how to do this? Please help, thank you. Chloe