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Hi Lionel
I told you that you that I was bad at Math. <G>
Would love to have a copy of Mathematica ... but ... as always ... it's the
PRICE .
There's been a few postings on the Excel-L list re the following formula and
how to plot it in Excel.
Plot 3D - Surface z = f(x, y)
Of course the Math guys could come up with lots of examples that apply to
Metastock and trading. So maybe we should start there. What's it mean,
what's an algebraic expression meant to convey, etc.
You and I can use Derive and Michael can use Mathematica. Since the markets
are headed downward for the next few (fill in your favourite time frame)
anyway ... we should probably occupy our time with uplifting things <G>
Best regards
Walter
----- Original Message -----
From: Lionel Issen <lissen@xxxxxxxxx>
To: <metastock@xxxxxxxxxxxxx>
Sent: Friday, March 16, 2001 2:23 PM
Subject: Re: math and 3D plots
> Walter:
>
> I may have misunderstood your posting.
>
> Arithmetic is math, so is geometry, algebra in all its varieties, chaos
> theory, statistics and ad infinitum.
> Metastock uses algebra, the simple kind that's taught in grade and high
> school, its mostly symbolic arithmetic.
>
> Excel is much more than arithmetic, it's just that we use the simple
> capabilities the most.
>
> Two variables require only a 2 D space to plot, not 3 D. You can plot 2
> variables in a 3 D space, but all the results will lie on a plane.
>
> I agree with you, simpler is better, just as long as it isn't
simple-minded.
>
> Thanks again for telling me about Derive.
>
> Aside from this, since you like simplicity in analysis: the Eiffel Tower
was
> designed/analyzed using graphical methods, no arithmetic or algebraic
> analysis were used; the arch in St. Louis was designed/analyzed using
slide
> rules. Both these structures are fairly complicated.
>
> I don't want to start a new thread. Please e-mail me direct.
>
> Lionel Issen
> lissen@xxxxxxxxx
> ----- Original Message -----
> From: "W Lake" <wlake@xxxxxxxxx>
> To: <metastock@xxxxxxxxxxxxx>
> Sent: Friday, March 16, 2001 8:27 AM
> Subject: math and 3D plots
>
>
> > Thanks for your emails
> >
> > What you are talking about is the confusion between Math and Arithmetic.
> >
> > Most of the stuff in Metastock and Excel is Arithmetic, i.e., the
> > calculations and algorithms. The hard stuff is usually the "Math".
> >
> > Personally, I stick with the easier Arithmetic and only get dragged into
> > Math kicking and screaming. There are some very good Math people on the
> list
> > who love the stuff and could easily explain the difference between
> > Arithmetic and Math as it relates to Metastock and Excel.
> >
> > You need a 3D plot to handle equations that have two variables. The
points
> > of the array are plotted in 3d space and joined by straight line
segments.
> > That's why you get the wired grid look with the cute bright colours.
> >
> > I like Derive because it's got all those easy to use buttons right on
the
> > algebra window so now I can quickly punch in all of Simons' expressions
> and
> > get those neat looking plots.
> >
> > Best regards
> >
> > Walter
> >
> >
> >
>
>
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