Hello there...

My name's Gilberto and i'm tryin' to make something out of one particular PDE...

Let me span it for you quick:

I'm trying to discover the solution of Cauchy's heat equation for the cirlce S1 = {x mod 2p}, given the following parameters:

ut = uxx, u(0,x) = phi(x), t > 0, x belongs to R

I'm currently thinking that my next step is solving that equation using the Poisson integral. Is that correct?

solve(exp(-x)-x = 0)

gives 'LambertW(1)' intead of '0.56' which i found by simple fixed pt iteration.

I have this commands:

> for i from 1 to 10 do x1:=1*i:  g:= x1*exp (T) -1 : T=fsolve( g,T) : y1=3*T end do;               

If i execute if i=1 the first lines will be:

x1 := 1

g := exp(T) - 1                  

T = 0.

y1 = 3 T

Now my questions are two:

how to covert function to expression???

View 8710_ZZZ.mw on MapleNet or Download 8710_ZZZ.mw
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What are those 'Z' s represent?[File is attached]

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Hi there,

I am wondering if it is possible to create custom feedback based on results of tests or exercises?  For example, if a user receives 50-60% I would want them referred to a specifc URL or set of static web pages providing more detailed informtion on the given topic, however, if they receive , say, 61 - 70% they could be referred to yet a different URL, web site, etc. 

thanks,

Jeff

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TIm