Hello,

When doing a numerical solution to ODE using dsolve, I specify a ranges where I want the solution. Often time, I know that the solution only exist somewhere inside that range, for example, I often looking for valid solution where f(x) >= 0, and the numerical integration would fail beyond certain x. But I don't know what x is, so I just specify a range (by guessing) that contains x.

Maple / dsolve then would give an error like:

Is it possible to have a Plot Component in a Maplet?

I would like to include a plot in a Maplet that can be changed using some continuous action, like what you can do with a Plot Component in a worksheet by dragging the curser over the plot region.

In a similar way: Is it possible to have a slider with a continuous action in a Maplet, like the Slider Component in a Worksheet?

Help need to to solve BVP problem in Maple

BCs

> X = 0; Pb = 0; A =0 .441;
> X = 1; Pb = 0;
 

Q can be changed to acheieve the other end BCS

System of ODEs

ODE 1 : function of X & A      -----    ODE 2 : function of X,A&Pb

Hi

does anyone know where I can find a procedure for an exact calculation of the Mann Whitney test (uses a recursive formula so non-trivial).

thanks!

Hi, there

 I have a formula as blow:

Ue = .5*A*E^2+B*E^beta/(Emax-E)^alpha

I need to find the cofficients (A,B,alpha ,beta) in above formula.What I know is that the relationship between Ue and E, which is:

E Ue 0 0 0.2 0.01576213 0.4 0.629139894 0.5 1.457776151 0.6 2.958910418 0.7 5.605599058 0.8 10.20002179 0.9 17.77607359 0.92 19.57451259 0.95 22.81827108 1 29.34874031 1.02 32.35324584 1.04 35.41703504 1.06 39.08008982 1.08 42.71086444 1.1 46.46475176 1.12 50.53683716 1.14 55.48548924 1.16 60.4973377 1.178 64.70966192

 

Hi every body I have two functions which are aold(x) and anew(x). I am using them to update a function as: For example: aold:=x-> x^2; for i from1 to 5 do anew:=x->aold(x)+x; aold(x):=anew; end do; But it does not work because it cause loop in assigning the function. Also, if I unassign the aold(x) as aold(x):='aold(x)', also anew(x) got unassigned automatically. I am looking for a way to assign anew(x) as anew(x)=aold(x) and after that disconnect the relation between the two functions. Thanks Hamidreza.

I have some data in some text files I want to read in with maple. 

The problem is with the format of the data ... 

I  have a little bit of code that chows a parabola "rolling" and its focus tracing out a catenary. I want to trac the focus but not the parabola, and am unsure how. Any suggestions? Here is my code bit:

> L := unapply(int(sqrt(1+(2*x)^2), x = 0 .. X), X);
> P1 := display([pointplot([0, 1/4]), plot(x^2, x = -2 .. 2)], color = blue);
> F := proc (t) options operator, arrow; rotate(translate(P1, L(t)-t, -t^2), -arctan(2*t), [L(t), 0]) end proc;
> animate(F, [t], t = -2 .. 2, trace = 10, scaling = constrained);
 

Im making an animation that shows a parabola changing over a range of coefficients. I want to display each equation while it animates. Is that possible?

http://www.failai.in/show/F/AE1DF287E/darbas2.mw (without E₀)

http://www.failai.in/show/F/A1488DF1B/darbas3.mw  (with E₀)

It's a links to my worksheets (used maple 11). And now the problems:

So here is the code I have r := sum('exp(-r*x)*l[x +1]*m[x+1]', x = 0..50

Really not sure why this isn't included in Maples differentiation process.

In any case I was searching for mapleprimes links on this subject to no avail, although I know they exist I cannot locate them.  In any case if a were some function how do I, for example, diff(sin(x)*x^2,sin(x))?

 

Hi, I don't anderstand : executing the following function will froze maple if I enter other values that 'y' or 'n' (yes/no) It should stay in the while block and ask the user until it got 'y' or 'n' to quit the function thank to return call. code: askUser := proc() local rep; printf("Are you OK? (y/n)\n"); while true do rep:=op(scanf(%c)); if rep="y" then return(true); end if; if rep="n" then return(false); end if; end do; end proc; askUser();

Hello everyone. I have a matrix M of 2x2 with numbers in its entries except a particular entry which equals to Im(a*t^2+b*t). I assume that t is real, so that the particular element that I mention obviously must expand to t^2*Im(a)+t*Im(b) but maple doesnt expand it (I use maple 11). I have tried the instruction

map(expand, eval(M)) assuming t::real

but it doesnt works. Could you help me with this, please
Thanks very much
Jorge