Ti-nspire CAS and Equation Library

[pwnell]

Hi,

I have just bought a Ti-nspire CAS calculator. Since I have been
using an HP-48GX before this one, there are a couple of things missing
that I was wondering whether someone knows where I might find similar
functionality either on the device itself or in a supplementary
library file?

1) The HP has an equation library containing formulas for many
engineering/physics related problems, such as Ohm's law, Coulomb's law
etc. I could not find anything like this on the Ti-nspire CAS. I
assume this functionality is not available on the Ti?

2) On the HP I can use soft menus and easily enter binary/hexadecimal/
octal numbers, and convert to other formats with a press of a button.
This is useful for instance if I want to toggle a value between hex
and binary and in between perform a rotate/shift / bitwise operation.
On the Ti I do not see how to do this as efficiently. I can enter a
value as 0b101010 or 0h23FA etc, but it immediately gets converted to
the default base. I can change this base but it is several menu
entries away. Also even if I do change it it does not change the
history so I cannot "toggle" between values. Am I missing something?

[Nelson Sousa]

Probably not the answers you were hoping for, but here they go:


1. There are no such libraries defined (because nobody thought of
defining them until now!); you can define a set of functions as a
library and access them from the catalog; there's a shortcut function
to enter function names like "physics.ohm()", instead of
physics_library\ohm()

2. Nspire CAS doesn't have soft (programmable) menus.
But there's a faster way to convert between bases: 0b01000111010>Hex
will display in hex base, regardless of menu settings (replace > by
the conversion symbol; from the symbol palette it's the black triangle
on the first row, between underscore and deg symbo; I don't think this
one has a shortcut or at least I couldn't find it).
You won't convert the history, though. History is static: you can
delete entries or copy&paste, but once something is in the history you
can't change it unless you repeat the calculation.


Cheers,
Nelson

[pwnell]

On Sep 20, 10:22 am, Nelson Sousa <nso...@gmail.com> wrote:
> Probably not the answers you were hoping for, but here they go:
>

> 2. Nspire CAS doesn't have soft (programmable) menus.
> But there's a faster way to convert between bases: 0b01000111010>Hex
> will display in hex base, regardless of menu settings (replace > by
> the conversion symbol; from the symbol palette it's the black triangle
> on the first row, between underscore and deg symbo; I don't think this
> one has a shortcut or at least I couldn't find it).

Thanks for your response. I tried this, but I get "Error:
Inconsistent units". I typed in: 0b111010101>Hex with > replaced by
the conversion operator. What am I doing wrong?

[Nelson Sousa]

my fault, sorry!

It's >Base2, >Base 10 and >Base16

Nelson

[-TJ]

Dear Pwnell,

I hope you have fun with your new TI-Nspire CAS Calculator! =]

Sincerely,
-TJ