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Messages - greg701

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1
TI-BASIC / Re: How to find an Adjacency Matrix
« on: May 09, 2011, 03:35:45 pm »
Lol, typed the wrong thing... I mean I want to find the adjugate of the matrix.

Sorry it's been a long day x

2
TI-BASIC / How to find an Adjacency Matrix
« on: May 09, 2011, 02:09:28 pm »
Hi all I have a TI-Nspire (Non CAS)

I was wondering how (or whether) it would be possible to create a program which can find the adjacency matrix of a given matrix.

I have no idea even how to start this so any help in the right direction would be great.

Thanks

Greg

3
TI-BASIC / Re: Storing values to a list
« on: May 04, 2011, 02:01:00 pm »
Sorry i'm using a TI-Nspire Non cas and it's TI-Nspire Basic

Thanks Very much

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TI-BASIC / Storing values to a list
« on: May 04, 2011, 01:12:10 pm »
How do I store values to a list in a program?

Basically what I want to do is say store numbers in a list.

e.g. { 11, 12, 14, 16, 19 }

I then want to calculate the difference of two adjacent terms and store these in another list, e.g.

{ 1, 2, 2, 3 }

and so on

{ 1, 0, 1 }
{ -1, 1 }
{ 2 }

How would I go about programming this? I do even know how to create lists. Any help would be much obliged :)

Thanks

Greg

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TI-BASIC / Output results to a table TI-Nspire
« on: May 04, 2011, 05:32:33 am »
Hi all I was wondering whether it would be possible to output results from iterative calculations to a table.

For example say I have the Newton raphson Iterative formula,



and I wanted to display results in a table with headers r and x_r

How would I go about programming this so it outputs to a table on my TI-Nspire (Non cas)?

Thanks for your time and trouble

6
TI-BASIC / Re: Simple (I think) programming question
« on: May 02, 2011, 05:00:49 pm »
Ok this is what I have created so far.

Anyone suggest any improvements/ways of neating this up.

Also the user has to declare the function, f1(x), e.g (x^2) before the program can run. Anyway to resolve this issue?

Code: [Select]
Define LibPub secant(a,b,c)=
Prgm
:© A program to carry out the secant method
:setMode(1,1)
:Disp "When r = 0"
:Disp "x0 = ",a
:Disp "f(x0) =",f1(a)
:Disp ""
:Disp "When r = 1"
:Disp "x1 = ",b
:Disp "f(x1) =",f1(b)
:Disp ""
:For d,1,c,1
:Local e
:e:=((a*f1(b)-b*f1(a))/(f1(b)-f1(a)))
:Disp "When r =",1+d
:Disp "x",1+d," = ",e▶Decimal
:Disp "f(x",1+d,") = ",f1(e)
:Disp ""
:a:=b
:b:=e
:EndFor
:
:EndPrgm
Thanks for your time :)

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TI-BASIC / Simple (I think) programming question
« on: May 02, 2011, 03:17:09 pm »
Hi all I want to program the secant method on my ti-nspire non cas.

The program requires various arguments

requires x0 , x1, f(x), and the number of iterations.

The iterative formula is:



I was wondering how I would go about programming this.

I think I would be able to do it if I knew how to pass a function ( f(x) ) into the program. Any help would be much appreciated. :) Hoping I can create a whole library of Numerical Methods :)

Thanks Greg  ;D

P.s.

Was also wondering how to give more decimal places on output to the screen

8
Other Calculators / Swapping the cases of TI-Nspire CAS with TI-Nspire Non CAS
« on: March 24, 2011, 04:51:58 am »
Hi all.

I have a non-cas TI-Npsire and was contemplating getting a TI-Nspire CAS. However I want to be able to use my calculator in exams, and as CAS calculators are not permitted in exams here in the UK i was thinking of swapping the cases over. Is there anything to prevent me from switching over the boards. My friend has also agreed to buy the original Nspire with the CAS housing for a small fee... so it would be a win win if it worked!!

I was also wondering if cases could be replaced from Texas Instruments. If so if I were to wait until the new CX calculators come out, would I be able to purchase a TI-Nspire CX CAS and then be able to contact Texas and request a replacement case, but for the non cas version? If this is possible then I think I may just do that :)

Thanks for your time

Greg :)

9
Ndless / Re: Ndless 2.0 for TI-Nspire Clickpad/Touchpad
« on: February 22, 2011, 04:19:19 am »
Wow thanks guys. It works well. You do realise this is going to mean i fail all my exams :|

Hahah not to worry, I think further maths is under rated anyway ;)

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Ndless / Re: Ndless 2.0 for TI-Nspire Clickpad/Touchpad
« on: February 21, 2011, 06:53:38 pm »
Hi all, I have managed to build the current version of ndless and installed it sucessfully on my calc. I also put gbc4nspire on my calc and downloaded a gameboy rom.

The problem I am getting is that I have no arrow key support. Is it possible to map the keys to the number pad so it would be possible for me to play pokemon on my calculator in maths lessons??  :w00t:

Thanks for all your trouble and keep up the good work :)

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