upload.mwDear all, Can someone find what my mistake is?

Hi to all, 

I would like to know where if I could plot two functions (both are computed by "if statements") on the same graph and could maple read "where" like VB (if ...where...end if)

Your help is appreciated

I was recently asked a question on using regular expressions with ?type , and I thought it was interesting enough, to share here.

hi

i have tried Maple help but could not find any answers.

would appreciate some help on how to construct an algorithm for a Pell's equation with D = 29 (x^2 - D*y^2 = 1)

That is x^2 - 29*y^2 = 1.

i know that there is an infinite number of solutions, but would appreciate the first 5.

(x_1, y_1), (x_2, y_2), ... , (x_5, y_5)

many thanx,

antonio

hi. i write a program consists a for loop in which cycle 'i', x[i] and hz[i] is calculated.

now i want to plot hz[i] correspond to each x[i].

this code is working but how to brief them?

hhz := piecewise(x < X[1], hz[1], X[1] < x and x < X[2], hz[2], X[2] < x and x < X[3], hz[3], X[3] < x and x < X[4], hz[4], X[4] < x and x < X[5], hz[5], X[5] < x and x < X[6], hz[6], X[6] < x and x < X[7], hz[7], X[7] < x and x < X[8...

I have the following procedure that generates Sierpinski's triangle:

seirpinski := proc (n)
> local Mat, Vector1, Vector2, Vector3,
> Prob1, Prob2, Q, prob, counter, fractalplot;
> Mat := linalg[matrix]([[.5, 0.], [0., .5]]);
> Vector1 := linalg[vector]([0, 0]);
> Vector2 := linalg[vector]([0, 0.5]);
> Vector3 := linalg[vector]([0.5, 0]);
> Prob1 := .333; Prob2 := .333;
> Q := linalg[vector]([0, 0]);
> writedata("fractaldata", [[Q[1...

I have been reading through the following book:

Hilderman, Robert J. and Hamilton, Howard J., "Knowledge Discovery and Measures of Interest," Kluwer Academic Publishers, 2001.

To better understand the material in Chapter 3, "A Data Mining Technique" I have written a Maple Worksheet implementing...

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

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

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