Can someone please explaint to me why this isn't working and some possible corrections. Any help would be greatly appreciated! I'm trying to solve 2 equation and 2 unknowns. Below is the code that I have... View 4496_instri.mw on MapleNet or Download 4496_instri.mw
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The (new) volatility index from the CBOE is computed from option prices without using a specific model. Understanding that as a special case one can derive a formula to get higher moments from quoted prices in a completely model free way and thus gets reasonable approximate values for mean, variance, skewness and kurtosis without constructing an implicit density. Besides interesting in its own these figures can serve for estimating pricing models by providing initial guessing for parameters. The Maple sheet shows, how to find the formula based on a result of Carr and Madan. Then the essential steps and procedures are given which allow to compile

I apologize if this has been addressed elsewhere on the site, but I was wondering if there have been any updates made for Maple 11 Windows Vista support. I am having an odd problem where, whenever I go to save or open a document in Classic Worksheet Mode the dialog box opens, and as soon as I move the mouse, Maple 11 closes completely. Any information or assistance would be greatly appreciated. Thanks a lot. Regards, Keenan

This sheet shows, how one can extract a "risk neutral density" from prices of traded options: theoretical one can price options through a probability function (describing the stock's behavior) and if prices would be given 'in a continuous way' one should recover that functions to get information on the stock (differentiating prices twice w.r.t. strike). The first step is a quite brute way: interpolate extracted volatility by a polynomial of low degree to get the observable part of such an density. Now extend to the unobservable left and right tails by selecting a Black-Scholes situation with reasonable parameters.

I find that reading lots of help pages causes eye strain. A way of reducing this that works for me is to change the background color of the help pages from white to yellow. This can be done by setting HelpBGColor=255,255,224 in the ini file. On Windows XP the ini file will be found at C:\Documents and Settings\Joe User\maple9.ini or maple10.ini. For Maple 11, the file can be found at C:\Documents and Settings\Joe User\Local Settings\Application Data\Maple\11\maple.ini

Can anyone explain to me why the argument of the innerproc, which as y is a local of the outerproc, gets evaluated more than one level?

innerproc := proc(t)
print(t[1]); # or dismantle, or lprint
end proc:

outerproc := proc(x)
local y;
y := x;
print(y[1]); # or dismantle, or lprint
innerproc(y);
end proc:

outerproc(vector(1,['exp(0)']));


acer

Hello. This is not a question, but an answer. I have just installed Maple 11 under Ubuntu 7.04 Feisty Fawn and I thought I would share my experience. 1) Log in to an account with sudo rights. 2) Insert the Maple 11 cd for Linux. When asked about what to do with it, mount it. 3) Open a terminal and write cd /cdrom sudo sh ./installMapleLinux32 4) Enter your password. 5) For the location of the installation, I entered /usr/local/maple11 instead of the default. 6) After the installation (and the activation) is complete, I created two symbolic links as follows: on the terminal, write

Hello, I would like to use Socket package to get informaction from HTML page on Website. COuld you help me please? I need to get the part of HTML file to use it in my procedure. Thank you very much Vladimir

Why not create a bug forum on here?

Maplesoft might automate a process to add a comment to posts made in such a forum, whenever the status of the bug was changed (in whichever internal database is used to manage bugs).

I have long suspected that software users do not usually submit their bugs, and that they could do with some encouragement.

acer

If one only wants numerical values in double precision for real arguments then Maple is quite slow, even for the quite typical case of index 1 or 0. A way is to use the GNU Scientific Library GSL as external source for this special cases or to compile the needed stuff into a DLL and use that through external calls. However I (once) wanted to have that as Maple code and translated Ooura's solution into Maple (which is not too complicated). The motivation was to have something fast for evaluating integrals over such Bessel functions. Putting the coefficients needed for the numericial approximation into global arrays this makes Maple as fast as GSL (almost, M9.5 did, M11 is somewhat slower for this approach) for this functions, if one uses hardware float evaluations 'evalhf' (=double precision).

Using Safari (browser on Mac), when I click "Post new forum topic" I get this... Click to see the image... The text box where the text should be entered is too far to the right, partly covered by other stuff... Slightly inconvenient for typing a message there.

I installed Maple 11 on two Macs yesterday. No problems (so far at least) on an Intel Mac. But on a G5 Mac, I have crashed the Mac 6 times in two days... more than the preceding month for sure, probably more than the preceding year... Before I contact support, I am interested in whether this is only me, or something general for PPC Macs. So, anyone using Maple 11 on a PPC Mac? [technical: Mac OS 10.4.9; PowerMac G5; one processor 1.6 GHz]

how to make maplet which can run some window by using builder maplet..? how its steps.. regard Hari(ary_raper@yahoo.com)

At what age do you think students should start learning and using Maple? What are your reasons?

I am generally dissatisfied with poor quality plots in Maple obtained with implicitplot3d. In particular, I have a polynomial in three variables x,y,z with 84 terms of degrees ranging from 0 through 12 and with integer coefficients. I have tried using options grid=[np,np,np] with np=40 and higher, and numpoints=k, where k = 1000, 10,000, 100,000, or even 1,000,000: the edges are visibly not smooth even though the size of the .eps file grows considerably to some 3MB. Question: Any suggestions how to improve the quality of the plot? I say right away that I do not have parametrization for that surface - only an implicit definition. Perhaps I should try to find it.