I have two procedures X() and P() which both are working. (See attached worksheet )

LL_100)_Quandl_Get_D.mwLL_100)_Quandl_Get_D.mw

When I put:

z := X(P());
Do(%DataTable0 = z);

I get an error:

Attempted to set unknown property 'value' on component 'DataTable0'

why??

Hi

Is there any way to program a button component to stop current calculations and restart maple server?
Thank you.

Is there a way to speed up the calculations?
Thank you.

Download slow.mw

Let the polygon P:=polygon([[0,2],[1,4],[2,3.5],[4,4],[5,1],[4,0.75],[3,0]])

be given.
How to find the rectangle of the minimal area which contains P? Of course, with Maple. Is it a rectangle having a side parallel to the longest diagonal of P?
The same problem in the general case: a procedure is required.

If I type the following:

a := 1

a2 := 1.5

a*a2

When I press enter

I want it to display the expression without evaluating and then the result:

(1)*(1.5)

By default the program displays  1.5.  Is it possible to display it this way?

hello please help me for maple worksheet 17

how can i do parametric diff?

i know implicitdiff and diff but i don't know how can i do parametric diff thanks very much

i got loop dat gives me Vx and Vy functions in evry step,i need to solve this ode 


proc (X) options operator, arrow;
X(t) end proc;
proc (Y) options operator, arrow;
Y(t) end proc;

ode := diff(X(t), t) = evalf(subs(x = X(t), y = Y(t), subs(vvx = Vx, vvx))), diff(Y(t), t) = evalf(subs(x = X(t), y = Y(t), subs(vvy = Vy, vvy)));
ics := X(0) = xxx, Y(0) = yyy;
ds := dsolve([ode, ics], type = numeric, method = rkf45, maxfun = 0, output = listprocedure);
XX := rhs(ds[2]); YY := rhs(ds[3])

i got XX(t) and YY(t) this is one parametric function,she looks like this

[URL=http://hostingkartinok.com][IMG]http://s5.hostingkartinok.com/uploads/images/2013/11/6b7bc8537f9f8d3d37c7b30bc3c2b316.jpg[/IMG][/URL]

i need to get her 1st and last value of t when she exist.
i make XX(-9999999)  and XX(9999999) to catch erorr and get values.
but for some Vx and Vy i get  
"cannot evaluate the solution further left of %1, too many step failures, tolerances may be too loose for problem",−0.15345979       
erorr.

When he try to get XX(999999) he spends like 10-15 minuts, so its realy big waste of time , i just need to get this critical valuse,so maybe there is another way?

eq1:=
(1/4)*D^2*Pi-(1/4)*D^2*arccos((-D+2*h)/D)-(1/2)*sqrt(h)*sqrt(D-h)*D+h^(3/2)*sqrt
(D-h);
                          
eq2 :=
-(1/2)*sqrt(h)*sqrt(D-h)*D+h^(3/2)*sqrt(D-h)+(1/4)*D^2*arcsin((-D+2*h)/D)+(1/8)*
D^2*Pi;

These equations are the same. yet simplify(eq1-eq2,trig);
<>0
The Mathematica COMMAND FullSimplify[..] gets zero.

Use the command taylor to find the Taylor’s series about  pi of e^{-(x-pi)^2}

specifically compute the 11_th coefficient a₁₁.

taylor(exp(-(x-Pi)^2),x=Pi,11);

is this correct?

thanks

Hello,

I look for a way to color the different subsystems of my system in the 2D mode.

It should be to have a clearer presentation of my system.

Is somebody known as it is possible to color a subsystem ?

Thank you for help.

Hi!

How do I get Maple to factor to following long expression:

where one factor is (pp1^2+pp2^2+pp3^2)?

Thanks,

Arka

Hello there,

I have some troubles with plotting implicit functions , aswell with plotting polar ones.

When I ask the plot of my function it's not ''smooth'' , it has edgdes everywhere that aren't suposed to be there (I think).

These are 2 examples:

K:=x^2*(x^2+y^2)=a^2*y^2;a:=1;
implicitplot(K,x=-2..3,y=-6..6,colour=red);

K:=(x^2+y^2)^3=a^3*x*(x^2*3*y^2);

implicitplot(K,x=-6..6,y=-6..6,colour=red);

Can somebody help me out on how to draw them smoothly?

Maybe I have to change settings?

Thanks alot!

Thanks

x^4-1equivalent 0 mod 29

after find root of inverse?

In geometry 3D, I have four vertices A(x1,y1,z1), B(x2,y2,z2), C(x3,y3,z3) and D(x4,y4,z4) of a tetrahedron. How to check a point P(x0,y0,z0) inside, outside or lie on  tetrahedron ABCD?

Hello I have a question about how to differentiate integrated equation .

 u:=integrate(q(i),i=0..M);

  diff(u,q(i));

doesn't return the equation of 1. I want to differentiate u with respect to the q(i) in q(0)....q(M).

But, I can't.

I am very glad if you tell me how to do about this calculation.

Thanks in advance.

Taro yamada