Hello if you can help I would really appreciate it.

I have a loop that gives me real, complex and imaginary solutions, and a few zero solutions. I am only interested in the zero solutions and so i only want to see what my input values are when the solution is zero. All i need is some command to discard all solutions except the zero solutions at every interval of the loop so that i can see the corresponding input values.. I tried selectremove but its not really working, is there a way to do this? If this doesnt make sense i can clarify more.

(∑)a[ijk](t)(x^(j))^((k))+b^(j)(t)=0,i=1,..,n.

click enter,and the font will be automatical converted to Times New Roman

but with error information about my subscript (j,k)

s1 := series(sin(x), x, 6)

c1 := series(cos(x), x, 6)

e := exp(1)

e1 := series(e^x, x, 6)

how to make s1+c1 =  e1's form,but x-(1/6)*x^3+(1/120)*x^5+O(x^6)+(1-(1/2)*x^2+(1/24)*x^4+O(x^6))

 

 

Hi wizards,

I've recently migrated some Maple-based research to an 4-way AMD 64-bit system running Linux Ubuntu 9.10 (Karmic Koala). installed Maple 11.02, and thanks to previous forum posts I was able to resolve the blank document window problem, and was able to install a version of libstc++.so.5 that is required by NLPSolve in this version of Maple. Although I picked it up in a forum that claimed to distinguish between 32-bit 64-bit versions, it looks like I'm not out of the woods yet. In response to an Optimize call, Maple returned

I am trying to graph a torus using maple.

z= 1 - (r - 5)

Could someone please help. I think I need to use implicitplot3d but need help setting it up.

I also want to set up an integral that will allow me to find the volume and surface area of the torus. Any help appreciated. I do not know maple that well at all by the way.

When I execute the code below, dsolve returns the trivial solution. If I were to apply the BCs by hand I'd conclude that there is a set of eigenvalues associated with the ODE. Is there a way to have Maple produce the eigenvalue equation automatically, or would you typically apply the BCs by hand to find it?

Y_diffEq:=diff(y(x),x$4)-beta^4*y(x)=0;
Y_BCs:=y(0)=0, (D@@2)(y)(0)=0, y(L)=0, (D@@2)(y)(L)=0;
dsolve({Y_diffEq,Y_BCs},y(x));

 

PS

Is there another way to specify the derivative BC?

 

Thank you
 

Has anyone used MapleSim to coordinate with Matlab/Simulink Model for the purpose of making their autocode the most effiecent?  I belive from  a webinar I watched something like this could can be an application of MapleSim.  I'm curious if anyone  has used it for that purpose?  If so, what were the challenges/benefits? Did you save in embedded memory needed (i.e. smaller autocoded files) or shorter proccesing time measured? 

Hi, im having trouble with selectremove. Im trying to select R(z)>=0 or if R(z)=0 then Im(z)>0, i tried this:

selectremove ( if z--> R(z)>=0 else R(z)=0 then Im(z)>0 end if , % );

 

but its not working, any help would be much appreciated.

 

Thanks. 

 

 

I've been working on my master's project and am at (at least I hope I've got it) the final stage of making Maple do everything that I want it to. I have the flow chart here which is a little hard to see while looking at the module I have set up.

The difficulty I'm having is getting it to run as a whole. I just do not know what I need to do to get the thing started. The way I have it set up is that each procedure references another until they are done - a loop structure. Which may be more appropriate but I humbly submit it to you.

I do not completely understand the module pieces. I do know that each procedure I have inside of here should work (and if not, that's why it's a master's problem :D)

Thank you again for looking!

 (I know the local and export may not be correct, and sorry for the matrix multiplication looking so ugly here)

I want to evaluate a polynomial and turn its coefficients into hfloats. Shouldn't evalhf do this? For example:

f := randpoly([x,y,z]);  # integer coefficients
g := evalf(f);    # software float coefficients
h := evalhf(f);   # error

I think the last one should give me a polynomial with hardware floating point coefficients. Instead I get an error.

Hey there . i am new to this software.. so please help me to plot this: i have two equations: x1+x2=m -3*x1 + 4*x1^3 - 3*x2 + 4*x2^3 = 0 i want to have m on the y-axis . Range for m is 0.4..1 i want to have the curves of both x1 and x2 on x- axis and on the same graph . Both x1 and x2 have a range of 0..1. thanks in advance ..

Hi

I'd like to see the solutions of this system of differential equation with boundary conditions :

 

restart;
with(PDEtools);
EDP := diff(s(z), z) = -.45*i(z)*s(z), diff(i(z), z) = .45*i(z)*s(z)-.2*i(z)-.8*(diff(i(z), z));
IBC := s(100) = 1, (D(i))(100) = 0

 

But, when i do : dsolve({EDP, IBC}, numeric, range = 0 .. 100);

Hi,

I'm using MAPLE 13 on Mac OS X 10.5.8 with a "French keyboard".

densityplot requires an expression or function as its argument. 

Is there any way to trick maple into using a list of points?

 

 

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