Hi friends! I have a problem with Random Variable. I don't understand why theoretical Mean differs from sample's Mean

restart; with(Statistics);

r := RandomVariable(NegativeBinomial(3, .1));
Mean((3-1)/(3+r-1));

0.1000000000

S := Sample(r, 10000);

d := map(unapply((3-1)/(3+t-1), t), S);

Mean(d);

0.04703520901756091

But !!

For example if p=0.2 then all is well

Hi all

I have this repetition with for:

for i from 1 to 10000 do x[i]:=sqrt(i); print(i); end do:

I want to know at the same time when the repetition is working, the value of i where the calculation is. Not at the last time of the calculation of all the repititions.

Example: when i=1, I want to see 1, when i=600, I want to see 600 at the same time of execution the repetition and not the last of the repetition  

Thank you

Hi

is it possible to remove this warning and not to show it when executing a procedure ? 

Warning, `AzIII` is implicitly declared local to procedure `lisse`

Thanks

I have a question about using embedded component in Maple 2015.

I want to import the MapleSim model to Maple and use the "Combo Box" (which is one of the embedded component in Maple) to load the parameters that were used in the MapleSim model.

The picture above shows the Maple worksheet that I made simply.

As you can see, I imported the MapleSim file (which contains three parameters, m, c, and k) to the Maple by using "MapleSim Component (Embedded Component)".

After that, I wanted to load these three parameters to the "Combo Box" automatically like the picture above, but I couldn't do that.

(In the case above, I manually type m, c, and k in the "Combo Box")

Isn't there any way to load the parameters to "Combo Box" automatically?

I attached the MapleSim file that I made. It also contains the Maple worksheet.  

[TS]EmbeddedComponents.msim 

I appreciate any idea you may have.

hi.how i can dsolve couple linear equations with power series solutions or taylor series expantion?

file attached below.

thanks

TAYLOR.mw

Hello I have this assignment. I will translate it (because it is not english)

This is the assignment: [IMG]http://i68.tinypic.com/2cgoby9.jpg[/IMG]

(if u cant click on the above link, then u can see it here http://tinypic.com/view.php?pic=2cgoby9&s=9)

So it says:

-------

In an examination of young pigs' birth weight 853 newborn pigs were weighted. The weighting is shown in the table down below. 

[0,5-0,7] [0,7-0,9] [0,9-1,1] [1,1-1,3] [1,3-1,5] [1,5-1,7] [1,7-1,9] [1,9-2,1] [2,1-2,3] -> WEIGHT in kg

[26]            [43]       [102]       [145]        [171]      [196]     [119]       [42]          [9]      --> number of pigs

Draw a cumulative frequency curve of the weighting and determine the kvartils.

SO I usually do this in Maple, but this time I did a matrix but nothing happened.. I dont know how I should draw this curve? Help please. 

[IMG]http://i68.tinypic.com/2cgoby9.jpg[/IMG]

I have a vector, it is a zero vector apparently. I don't know what opperation lead to it being a zero vector. Any time I try to reduce this thing, I mess it up. I can't reduce it manually.

a=-((4*I)*sqrt(3)+4*sqrt(3)-5-7*I)/((4*I)*sqrt(3)+4*sqrt(3)-7-9*I)

b=-((390*I)*sqrt(3)+30*sqrt(3)-52-675*I)/(-3-4*I+2*sqrt(3)+(2*I)*sqrt(3))^3

c=-(1/2)*sqrt(2-2*I)*((6*I)*sqrt(3)+6*sqrt(3)-11-10*I)*(-2+sqrt(3))*sqrt(-2-2*I)*((2*I)*sqrt(3)+2*sqrt(3)-5-2*I)/(-3-4*I+2*sqrt(3)+(2*I)*sqrt(3))^3

<a/sqrt(a^2+b^2+c^2),b/sqrt(a^2+b^2+c^2),c/sqrt(a^2+b^2+c^2)>

The simplify command will reduce this bugger no problem. The moment I try rationalizing the denominator or anything like that I end up buggering the whole thing up. Maybe I should do a distance on two of the ordinates independently first. Anyway, I don't know what's up. 

I know how to use Maple for an optimization problem contaning continous variables but I couldn't find anything in help of Maple related to use boolean variables in optimization. So assume I want to minimize a function that one of its variables only can take 0 and 1 as its value. Anyone knows how to introduce those to the Maple? For example you can look at this link that Matlab can do many of these kind of optimizations.

Hello;

I need some help to compute the limits of integral:

and

Thank you for your help.

I_Mariusz

limity.mw

Hello everyone,

I'm new at maple.Sorry if this question asked before me, but i couldnt find it.

As i said i am new

so when I open new document (mode) at maple2015 i can do basic calculations for instance additon substraction multipicitaions. But when i want the  calculate x^2+5-3 and enter it supposed to be say to me blue line as a answer. But maple says nothing.

is there any point that i missing? 

Thank you very much all you in advance.

I want to solve the following equation for E[k]:

fr = 1.64*10^6*E[k]^2*exp(-8.5/E[k]);

Maple 17 gives

solve(fr = 1640000.00*E[k]^2*exp(-8.5/E[k]), E[k]);

          4.25000000000000             4.25000000000000     
    ----------------------------, --------------------------
            /  5442.65560181792\          /5442.65560181792\
    LambertW|- ----------------|  LambertW|----------------|
            |        (1/2)     |          |      (1/2)     |
            \      fr          /          \    fr          /

Maple 2015 gives:

solve(fr = 1.64*10^6*E[k]^2*exp(-8.5/E[k]),E[k]);
Error, (in solve) invalid input: `evalf/LambertW` uses a 2nd argument, zz, which is missing

This is Maple 2015.2 on OS X 10.10 Yosemite.

I can copy-paste Maple 17's solution into Maple2015 and it evaluates correctly (for a given value of fr).

Is this a bug or am I missing something? Help on LambertW looks identical for both versions of Maple.

M.D.

Hello All.

Why Maple can’t do this Simple indefinite integral?

I'm have a integral :

Please compare to Mathematica:

Thanks in advance for your help.

I_Mariusz

test.mw

Hello people in mapleprime

maxi:=proc(obj,expre,x,y)
local eq1,eq2,eq3,lagrangean;
lagrangean:=obj+lambda*expre;
eq1:=diff(lagrangean,x)=0:
eq2:=diff(lagrangean,y)=0:
eq3:=diff(lagrangean,lambda)=0:
solve({eq1,eq2,eq3},{x,y});
end proc;

Using the above procedure, next code will not return the values of a and b, or a[2] and b[2].

Can you teach me the reason why?

maxi(a*b,z-a-b,a,b);

maxi(a[2]*b[2],z-a[2]-b[2],a[2],b[2])

Thanks in advance.

taro

This one really has me baffled.

What the proc does is not important. This is just about as simple an example as I could write. Maple 2015 is complaining anytime I try to declare a local variable. The second example shows that the local declaration is needed - Maple even introduces it into the procedure that it defines.

restart;

test := proc(  )
 local a;
 a := 3
end proc;
Error, unexpected `local` declaration in procedure body

test := proc(  )
# local a;
 a := 3
end proc;
Warning, `a` is implicitly declared local to procedure `test`
test := proc(x) local a; a := x end proc

Here's the version information for my current Maple.

interface( version );
Standard Worksheet Interface, Maple 2015.0, Windows 7, February 17 2015 Build ID 1022128

Can someone explain what is happening, and why I'm just now seeing this?

Doug

---------------------------------------------------------------------
Douglas B. Meade  <><
Math, USC, Columbia, SC 29208  E-mail: mailto:meade@math.sc.edu
Phone:  (803) 777-6183         URL:    http://www.math.sc.edu

A lot of my life is at the moment spent using solve to solve systems of equations, and then trying to weed through the solutions maple gives to find the ones I am interested in. Specifically i'd like to have a program that can weed through the solutions and eliminate those that include equalities of the  form p[i]=-p[j] or p[i]=0  where i and j are integers (or equalities of that form with the letter q replacing p). Specifically i don't want to exclude equalities of the form p[i]=-p[j]*something+something else-another thing.... as they can be useful (or equalities of that form with the letter q replacing p).

Here is a (simple) example of the kind of equations I am likely to be solving and their output from solve:
A := solve([p[1]*p[2]*p[3] = q[1]*q[2]*q[3], p[1]+p[3] = q[1]+q[3], p[2]^2+p[3]^2 = q[2]^2+q[3]^2])

I have some code which gets rid of solutions where one variable is set to 0 

with(ArrayTools);
GetRidOfDumbSolutions := proc (sols)
local Nsols, Npars, GoodSol, GoodSols, GoodSolsCounter, i, j;
Nsols := numelems(sols); Npars := numelems(sols[1]);
GoodSols := []; GoodSolsCounter := 0;
for i to Nsols do
GoodSol := 1;
for j to Npars do
if IsZero(rhs(sols[i, j]))
then GoodSol := 0
end if
end do;
if GoodSol = 1 then
GoodSols := Concatenate(1, GoodSols, sols[i])
end if
end do;
GoodSols
end proc

but i can't see how (in maple) to detect an expression of the form p[i]=-p[j] especiall if that is being written in 2-d math. (i don't quite understand the different maths environments or how to convert from one to another or to string)