Hi,

I have a vector of points which sample the graph of a spherical function, say f. My definition for the graph of a spherical function is :

points[k] = f(x_k) * x_k     where  x_k \in S^2   .

Right now I use pointplot3d to obtain a rough visualization of my function. However, I'd like a plot that looks like a solid surface, the way plot3d output can look. 

Any ideas?

Thanks for any help!

How can I calculate F(6/7) - F(-6/7) to find probability related to central limit theory?

I need to first use the F:=x-->y to define F. What I'm getting is not helping me answer my question. could someone please tell me the steps to find an answer? 

I am running MAPLE 12 on WINDOWS XP & recently updated my JAVA and now anytime I try to use HELP, MAPLE hangs.  I have to enter the TASK MGR to terminate MAPLE, because I cannot do anything else.

Anyone have a FIX on this?

Hi I'm Oscar and I'm new on this forum.

I would like to know how does Maple manage Normal random variables when I want to obtain a symbolic expresion like the following (use of Variance to compute symbolically the variance of a combination of normal random variables with its characteristic parameters also symbolically defined)

with(Statistics):

x:=RandomVariable(Normal(Mux,Sigmax)):

y:=RandomVariable(Normal(Muy,Sigmay)):

z:=Variance(x^2+y^2+x*y+c): (1)

Hello people, I have a question about an equation, I have to solve on maple.

So i have

>p:=a+bx+cx^2+dx^3;

>I1:=int(p(x),x=0..1);

>I2:=int(x*p(x),x=0..1);

>I3:int(x^2*p(x),x=0..1);

>I4:int(x^3p(x),x=0..1);

and i have to find a,b,c and d

the only thing i know is that I1=1, I2=0, I3=0,I4=0

can someone can help me. Thank you

Hi,

I am new to Maple and doing a trivial calculation raised a few questions. I tried to calculate the average density of a wire with the following specs: 

• diameter = .40 inches
• length = 1000 feet
• weight = 61 pounds

Here's what I have come up with. 

with(Units[Standard]):

wirediameter:=.40[inch]:

wirelength:=1000[ft]:

wirevolume:=(wirediameter/2)2 * Pi * wirelength:= 

VEH_We.mwDear Community

I try to plot a rather sophisticated function with Bessel functions and several roots of a transcendent equation, but failed. I've specified all parameters, functions, etc. yet I still get an error message. What do I do wrong? I've uploaded the file,  if you could have a look.

Tx in advance, best regards

Andras

I have 3 matrices and I want to generate the group associated does anyone know how to do this without doing it manually?

thanks

M 

Why is it that the command

plot( 'dphidx'(x,y,10,5,1/10), x= 0..1, y=0..1)

gives a good plot but I get an error for

evalf(Int(Int( 'dphidx'(x,y,10,5,1/10), x= 0..1) y=0..1))

Error, (in dphidx) cannot determine if this expression is true or false: 99/10 < x and x < 10.

Here's the code for dphidx:

dphidx:=proc(x,y,xj,yj,h) local v; if xj - h<x and x<xj then if yj - h<y and y<yj+h then if y<=yj...

How to find with Maple all symmetric matrices of  size 5, whose entries are 0,1, having only strictly positive eigenvalues?

One of the examples in the Overview of Vector Calculus documentation is int(x^2+y^2),[x,y]=Circle(<0,0>,r) .  I can find no documentation on "Circle"  What does the above expression mean anyway?

Ratch

Hello!

I made an upgrade from Maple 13 to 14, but a program i wrote with maple 13 (ode event handling) simply is incorrect in maple 14. The events aren't recognized anymore. What is the problem?

Thank You.

I have created a procedure called Tproc with 3 arguments (t,k,b). Now I want to calculate the partial derivatives of this procedure with respect to k and b. Looking at the help page of fdiff, i tried this:

but all maple returns is:

I want to solve an ODE but the result is not a polynomial as it should be, it just writes some integrations instead of solving this integrations. I show this problem as:

when I integrate the equation, instead of integrating it just writes integrate of the expression, what is wrong? I'm willing to integrate regard to x. My whole worksheet is uploaded. What should I do? I just right clicked on it and used integration. I'm using maple 13. As you see I want to solve the last ODE (F[0...

When a procedure is called that is nested inside of a module, it returns its own name rather than the value it calculates.  E.g. here is a very simple package:

somePackage := module ()

  export someproc; 

  someproc := proc (yr)

    return (2010);

  end proc

end module;

That compiles fine.  But when this is executed:

somePackage[someproc];

The...