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   Home :: Community :: Surveys :: Would you like to see more articles written about the mathematics of calculators?
Results
Choice Votes   Percent
Yes 339 75.8%   
No 108 24.2%   

Survey posted 2000-04-27 07:14 by Andy.

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Re: Would you like to see more features dealing with the mathematics of calculators?
nova  Account Info
(Web Page)

that's what calcs are for, right?
the only programs i write are math/science related.

Reply to this comment    27 April 2000, 07:23 GMT

Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Bennett Kalafut  Account Info

Exactly. They have a lot of math potential (too bad TI only sees them as teaching tools)

-B. Kalafut

Reply to this comment    27 April 2000, 08:29 GMT


Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Paul Schippnick  Account Info
(Web Page)

While it is true, TI's low end graphing calculators (Like the TI-73) are primarily educational in design, TI says about the TI-86:

All the power and functionality of the TI-85 with major new enhancements for college mathematics, engineering, and science.


This can also be said about the TI-89 the redesigned TI-92, a super set to the late TI-82 and now the TI-83 and TI-83+. Redesigned to meet academic needs.

Reply to this comment    27 April 2000, 09:02 GMT

Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Ryan Johnson  Account Info

I think, the 89 and 92+ are also supersets of the 85 and 86. The only calculator they are not supersets of is the 73 because it has Graph Explorer software and numberline.

Reply to this comment    28 April 2000, 05:05 GMT


Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Paul Schippnick  Account Info
(Web Page)

You said, "I think, the 89 and 92+ are also supersets of the 85 and 86. "

TI says, "The TI-92 is not a superset of the TI-85."

For example, variable names and program names in the TI-82, TI-83, TI-83+, TI-92, TI-92+, TI-89 are NOT case sinsitive and they are case sinsitive in the TI-85 and TI-86. But for more than this TI says:

"The TI-85 has a differential equation graph mode, some extra linear algebra functions (eigenvalues,eigenvectors, LU decomposition, cond), and an interactive solver that are not included in the TI-92 software. However, most of these features can be added to the TI-92 through user defined functions and programs.

"The TI-92 in addition has symbolic manipulation features, interactive geometry, a text editor, and 3D graphing, a statistics editor, matrix editor, and a function evaluation table."

Reply to this comment    28 April 2000, 10:46 GMT

Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Chase  Account Info
(Web Page)

Hmm...the TI-89, at least, has eigenvector/eigenvalue functions (eigVc(), eigVl()) and LU decomposition (LU()). I don't think it has condition numbers, though. These are easy to add; the first thing you do is add the 1-norm by writing:

max(seq([sigma](abs(a[x,y]), x,1,colDim(a)),y,1,rowDim(a))) -> m1norm(a)

or the infinity-norm with:

max(seq([sigma](abs(a[x,y]), y,1,rowDim(a)),x,1,colDim(a))) -> minfnorm(a)

or the Frobinius <sp> norm with:

[sigma]([sigma](a[x,y]^2, x,1,colDim(a)),y,1,(rowDim(a)) -> mfnorm(a)

Substitute your favorite norm in the following expression for condition number:

m1norm(a)*m1norm(a^-1)->mcond(a)

I don't know about the solver, though.

Reply to this comment    29 April 2000, 18:43 GMT


Re: Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Chase  Account Info
(Web Page)

Oops. Switch the "colDim" and "rowDim" in all those expressions. My bad.

Reply to this comment    29 April 2000, 18:49 GMT


Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Ryan Johnson  Account Info

True, the TI-92 is not a superset of the TI-85/ti-86 but the the TI-92+ is!

Reply to this comment    2 May 2000, 02:34 GMT


Re: Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Pleonazm Account Info

no 2+2=4, not 5!

Reply to this comment    6 May 2000, 04:17 GMT


Re: Re: Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Paul Schippnick  Account Info
(Web Page)

I would like to know who said 2 + 2 = 120 ? 5! = 120

For that matter 1,000,000! = 8.28e5565708

Reply to this comment    6 May 2000, 11:21 GMT


Re: Re: Re: Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Paul Schippnick  Account Info
(Web Page)

Typo should have been 8.26e5565708

Reply to this comment    6 May 2000, 11:43 GMT


Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Daniel Bishop  Account Info

How did you find this out?

Reply to this comment    13 May 2000, 05:55 GMT


Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
ikecam  Account Info
(Web Page)

But if you're really serious about getting something done with math, you should use a computer program, like Mathematica. It offers at a lot more functionality and ease of use than a calculator can hope to. Calculators are useful primarily as teaching tools because they can be taken to the classroom.

Reply to this comment    1 May 2000, 05:33 GMT


Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Bennett Kalafut  Account Info

It would be nice if Mathematica came at the price and portability of an 89 or HP 49.

Reply to this comment    2 May 2000, 05:07 GMT

Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Ryan Johnson  Account Info

It would also be nice if they had flying cars like in the Jetsons. :.)

Reply to this comment    3 May 2000, 03:12 GMT


Re: Re: Re: Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
ikecam  Account Info
(Web Page)

But even 10-year-old versions of Mathematica are better and easier to use than the TI-89. I have an absolutely ancient version that I got for free that can do 15 times as much as a handheld calculator.

Reply to this comment    4 May 2000, 00:31 GMT


Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Nick Disabato  Account Info
(Web Page)

Preach it.

--BlueCalx

PS: Oh, and if you're going to ISO this weekend, I'll be the one wearing a giant blue red and yellow propeller beanie.

PPS: With a llama on the top.

Reply to this comment    28 April 2000, 04:09 GMT

Re: Would you like to see more features dealing with the mathematics of calculators?
L_Kishyak  Account Info
(Web Page)

Hey nifty! 100% are for yes (at 12 votes though.)
and i'm getting a front seat on the board for once. i think it'd be nice if we could get some articles on advanced calculating with our TI's. right now, its breakfast time so I am going to leave and come eat later.
ps; don't go to my site, its a total waste (untill I fix it a bit)
The one and only
Steve

Reply to this comment    27 April 2000, 12:54 GMT

Re: Would you like to see more features dealing with the mathematics of calculators?
rgdtad  Account Info

I would not like to see more articles on the raw math, but on it's applications. SiCoDe has an applied trig in game making tutorial, and I would like to see some other things like that.

Reply to this comment    27 April 2000, 15:27 GMT


Re: Re: Would you like to see more features dealing with the mathematics of calculators?
Robert Maresh  Account Info
(Web Page)

Yes, Yes, Yes! That is what I like!

Reply to this comment    28 April 2000, 21:44 GMT


Re: Re: Re: Would you like to see more features dealing with the mathematics of calculators?
DarkLord

Dito <:-)

Reply to this comment    28 April 2000, 23:06 GMT


Math + Games = Coolness
James!  Account Info

Yeah, we should have tutorials that involve math, like a 3D tutorial! That would involve lots of math, but it would be neat to be able to make programs that display 3D graphics (I've always wanted to know how to do this).

Reply to this comment    5 May 2000, 00:31 GMT

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