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InvisibleArp
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TI-89 question
    #7883144 - 01/15/08 12:15 PM (16 years, 17 days ago)

Hey dudes.

Donno where else to put this so I thought that the pub might be the most suitable place :smile:

It's regarding the configuration of TI-89.

For instance, when I calculate 600*10^-4 it'll respond with fractions "3/50".

If I type 600.*10^-4, i will get a float response of ".06"

Is there a way to configure this thing so I always get a floatnumber response without having to use ex: 600.?


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OfflineCepheus
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Re: TI-89 question [Re: Arp]
    #7883166 - 01/15/08 12:18 PM (16 years, 17 days ago)

I wish my ti-83 responded with fractions.

Can't you set it in the 'mode' part of the calculator (thats where you change shit like that on the ti-83).

If not, theres most definitely a button on your calculator that either fractulates shit or decimalizes shit.. I have a casio scientific calculator that does fractions and it has a button for converting between the 2 :laugh:


--------------------
"I only ever hope to reach equilibrium, in Nature's matrix, in line with the meridian" ~ Jehst

:sun: "...and I know that I have to keep breathing, as tomorrow the sun will rise, who knows what the tide will bring?" :sun:

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Send any spare spore prints you might have and help the distribution :grin:

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Invisibleim_on_a_boat
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Re: TI-89 question [Re: Cepheus]
    #7883170 - 01/15/08 12:19 PM (16 years, 17 days ago)

yap you can change mode from decimal to fraction.. and you can always convert using the math->frac function

i'm actually gonna sell my calc soon.. no more math classes WHOOP!


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InvisibleRobo
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Re: TI-89 question [Re: Cepheus]
    #7883174 - 01/15/08 12:20 PM (16 years, 17 days ago)

Just hit mode, then 1 I think


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OfflineCepheus
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Re: TI-89 question [Re: im_on_a_boat]
    #7883187 - 01/15/08 12:21 PM (16 years, 17 days ago)

how much :naughty: ?

And what does the ti-89 have over the ti-83?

I got about another 4+ years of maths ahead of me :laugh:


--------------------
"I only ever hope to reach equilibrium, in Nature's matrix, in line with the meridian" ~ Jehst

:sun: "...and I know that I have to keep breathing, as tomorrow the sun will rise, who knows what the tide will bring?" :sun:

Free Spore Ring Europe
Send any spare spore prints you might have and help the distribution :grin:

Open Source. Freedom.  GNU/Linux

Addicting is not a word.


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InvisibleOneMoreRobot3021
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Re: TI-89 question [Re: Arp]
    #7883206 - 01/15/08 12:26 PM (16 years, 17 days ago)

Wow, TI-89. Blast from the Past.


--------------------
Acid doesn't give you truths; it builds machines that push the envelope of perception. Whatever revelations came to me then have dissolved like skywriting. All I really know is that those few years saddled me with a faith in the redemptive potential of the imagination which, however flat, stale and unprofitable the world seems to me now, I cannot for the life of me shake.

-Erik Davis


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InvisibleArp
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Re: TI-89 question [Re: Cepheus]
    #7883246 - 01/15/08 12:33 PM (16 years, 17 days ago)

I've been browsing through the mode-pages, and there are some settings for floats and fixes, but nothing much happens :sad:

Quote:

Just hit mode, then 1 I think



Doesn't work x)


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InvisibleDieCommie


Registered: 12/11/03
Posts: 29,258
Re: TI-89 question [Re: Cepheus]
    #7883248 - 01/15/08 12:33 PM (16 years, 17 days ago)

In case you havent got it yet, you need to change the setting to 'approximate' instead of 'exact'.

Quote:

Cepheus said:
And what does the ti-89 have over the ti-83?

I got about another 4+ years of maths ahead of me :laugh:




The Ti-89 has a CAS.  Thats a computer algebra system.  Basically it allows you to do symbolic differentiation and integration (if a closed form solution exists), and other symbolic mathematics.  You can do math with variables instead of numbers.

EDIT- you should be aware that many schools do not allow you to use the 89 on a test for your introductory calculus and differential equation classes.  They dont allow any calculator with a CAS, generally.  Make sure you check what is allowed.  I simply have a second calculator if my more powerful one is not allowed.


Edited by Qubit (01/15/08 12:36 PM)


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InvisibleArp
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Re: TI-89 question [Re: DieCommie]
    #7883277 - 01/15/08 12:37 PM (16 years, 17 days ago)

Quote:

In case you havent got it yet, you need to change the setting to 'approximate' instead of 'exact'.




I tried everything but that! Thanks man! :thumbup::thumbup::thumbup:


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Invisibleim_on_a_boat
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Registered: 04/06/06
Posts: 3,950
Re: TI-89 question [Re: Arp]
    #7883292 - 01/15/08 12:41 PM (16 years, 17 days ago)

ya ti 89 lets you solve for x :smile:

i've got a ti-84 plus.. but i dont really want to sell it over shroomery.  i'll sell it locally if anything.


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OfflineD4NK
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Re: TI-89 question [Re: im_on_a_boat]
    #7883323 - 01/15/08 12:49 PM (16 years, 17 days ago)

The TI89 saves me a shitload of time when doing calculations for engineering.  Specially for a poor sap like me who can't do math! :smile:


--------------------
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  "There is no god higher than truth." 



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