« previous next »
Pages: [1]   Go Down

Author Topic: Exact measurements on TI-Nspire CX CAS?  (Read 4029 times)

0 Members and 1 Guest are viewing this topic.

Offline Falcon

  • LV0 Newcomer (Next: 5)
  • Posts: 2
  • Rating: +0/-0
    • View Profile
Exact measurements on TI-Nspire CX CAS?
« on: January 04, 2013, 09:54:14 pm »
Is there any way to calculate exact measurements in a Geometry document on the TI-Nspire CX CAS? For example, when I create a line segment between (0,2) and (2,0) and measure its length, I get 2.83. Since this is the CAS version, is it possible to get the calculator to give exact lengths (2√2 in this case)?

Thanks.
Logged

Offline _Nicco_

  • LV4 Regular (Next: 200)
  • ****
  • Posts: 173
  • Rating: +6/-0
    • View Profile
Re: Exact measurements on TI-Nspire CX CAS?
« Reply #1 on: January 04, 2013, 10:16:09 pm »
Hey welcome to the forums.

I have the CX CAS too but I never figured out how to do that.

I noticed that it does integer division when there is no "." well not totally integer division but it leaves it in fraction form if there is a decimal.

I also noticed that when finding the vertex on a graph it will only give you a couple numbers after the decimal while on a TI-84+ it will give you so many more places after the decimal point.

I know that this doesn't answer your question but they were just things that might help try to figure it out.
Logged
They say that your signature is supposed to go here...

Offline epic7

  • Chopin!
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2200
  • Rating: +135/-8
  • I like robots
    • View Profile
Re: Exact measurements on TI-Nspire CX CAS?
« Reply #2 on: January 04, 2013, 10:22:17 pm »
I know how to make it display more numbers, but I don't know about radical form
Logged

Offline TheNlightenedOne

  • LV6 Super Member (Next: 500)
  • ******
  • Posts: 427
  • Rating: +16/-1
    • View Profile
Re: Re: Exact measurements on TI-Nspire CX CAS?
« Reply #3 on: January 04, 2013, 10:28:41 pm »
The Nspire is rounding the result. AFAICT the Nspire won't give answers in radical form. I tried to write a library to do this, and I couldn't get it to work. Sorry :-/
Logged
"Eris" (Ndless 3.1)
"Keto" (Ndless 3.1)
"Luna" (AMS 3.10, HW4)
"Aurora" (2.55MP)

Offline Falcon

  • LV0 Newcomer (Next: 5)
  • Posts: 2
  • Rating: +0/-0
    • View Profile
Re: Exact measurements on TI-Nspire CX CAS?
« Reply #4 on: January 04, 2013, 10:34:20 pm »
In that case, is there any coordinate geometry library that can do exact calculations like finding the distance between two points, distance between a point and a line, the area of any polygon given its coordinates, etc.?
Logged
Pages: [1]   Go Up
« previous next »