> 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          

An attempt at question 2 of the xkcd Velociraptor Math problem (mentioned on this blog post). The parameters and events facilities of

There is no released Classic interface to accompany the 64 bit version of Maple (12, 13) for the 64 bit Windows XP64 operating system. Personally, I prefer running the Standard over the Classic interface, although sometimes I miss common subexpression display for lengthy symbolic output.
 
The Maple Classic interface appears to talk to the Maple kernel only over a socket (or similar), and the...

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!

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

Hi... I don't have a lot of experience with Maple, but I want to plot some test data and find a least squares curve fitting. I know how to plot the stuff I want to plot, and how to do basic least square fitting. However, I have 6 data points to apply least squares on, and I have one additional "fixed" point. I know the curve will have to become parabolic (And I know how to curve fit to that using LeastSquares), but the problem is that the minimum of that parabola has to go through the fixed point. I have no idea how to achieve this (if it is at all possible).

Find y(1) and y′ (1), and then plot y(x) and y′ (x) on the same graph over
the range 0
≤ x ≤ 1, if y(x) is the solution of the initial-value problem corresponding
13
to the differential equation y′′ + sin(xy) = 0 and the initial conditions y(0) = 1 and
y′ (0) = 2.

 

That's my question, here's my input so far.