Display uncalculated fraction

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Summary:

Looking for a workarround to display uncalculated fractions with a neat fraction line in between.

Display uncalculated fraction

Martin (guest) 08 Jun 2012 11:26

Hello,

I am looking for a way or workaround to output a uncalculated fraction like

(1)

\begin{align} \frac{2\cdot3}{4\cdot2} \end{align}

with a neat fraction line in between.

With

Disp 2 * 3 / 4 * 2

it shows me the calculated result = 0.75.

With

Disp “2 * 3 / 4 * 2“

the program would do the thing I want but without a neat fraction line. I need that fraction line, because otherwise big fractions get confusing.

Do you maybe know a workaround for my problem?

My aim is to calculate formulas and output not only the results but also the calculation steps in between.

Thanks in advance.

Re: Display uncalculated fraction

burr 08 Jun 2012 21:23

Welcome to TI-Basic Developer!

One option might be using a combination of strings and the graphscreen: display the numerator and denominator as separate strings using the Text( command, and then draw a line between them using the Line( command.

How does that sound?

Martin (guest) 09 Jun 2012 13:02

Hi, thanks for helping, but I think I do not have the line() command. I cannot find it in the catalog. My calculator is the TI Nspire CAS.

Wolfgang47 09 Jun 2012 13:42

Oh, that would explain it. Something I have never quite understood about
The Nspire is its lack of graphics commands. It is powerful enough to run programs extremely quickly compared to the 83 series, & has a MUCH higher resolution screen, & yet I don't think there are any draw commands at all. (I don't say this as an authority on the subject; I have only used an Nspire twice.)

Hm, I am not sure how to hep u on this one; I don't know much about the Nspire because its programming language doesn't suit my needs (I mainly focus on graphics-related programs, like games).
Sorry.

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—Wolfgang

burr 09 Jun 2012 15:03

That was done on purpose by TI, as the Nspire was not designed for TI-Basic programming…

@Martin: Unfortunately, I think you are SOL on this one.

blue_bear_94 09 Jun 2012 18:52

I suggest that you learn Lua. TI's implementation does have graphics commands.

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Martin (guest) 13 Jun 2012 08:40

thats a good idea. thank you. can i run lua programs like ti basic programs. can i run them by typing "programname()" and press return or is something different?. can i mix source codes of both languages? is a lua expert here? :-)

Re: Display uncalculated fraction

CodeNoob 30 Jun 2012 23:26

Sorry if this is too late to help, but you could try displaying the numerator, some minus signs on a new line, and then the denominator on another new line like this:

:Disp "2 * 3","-----","4 * 2"

It wouldn't look as nice as what you could to do with the graph screen and drawing commands, but at least you'd be able to display the fraction vertically.

Steve Cox (guest) 24 Aug 2012 00:18

That wouldn't work, because he is one a TI-Nspire CAS

Re: Display uncalculated fraction

fredvanner 26 Oct 2012 08:39

Try:

Disp "2*3"/"4*2"

It works fine on my Nspire

Re: Display uncalculated fraction

Weregoose 26 Oct 2012 10:55

Mind the dates when you post. Thanks.

Re: Display uncalculated fraction

Wolfgang47 11 Jun 2012 19:30

@burr Yes I realize this was intentional, but I find it to be highly ironic that the calculator most capable/equipped for graphics (with a high res screen & fast processor) is the calculator that TI decides should not be used for fancy graphics and graphics related programming. It's like, what's the point of a full colour, backlit screen if you can't use it for highly visual purposes?

It just doesn't make any sense to me.
I understand that there are games for the Nspire, like a high quality version of Super Mario, but thats coded in machine language, is it not?

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—Wolfgang

Re: Display uncalculated fraction

blue_bear_94 13 Jun 2012 17:32

Those are either coded in machine language or Lua. Running machine language requires Ndless though.

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Sunrise 3 Progress: 30%
Size: around 20 KB, not including the save lists and in-game RAM.