So I went out and got myself a new calculator, and for some reason I got the nicest one available; the TI-nspire CX CAS and I am utterly lost. Please excuse my ignorance, I'm about to ask some extremely stupid questions:

First of all, how you divide?!?! When I try, it gives me the answer as a reduced, improper fraction. How can I convert that to a decimal? Or is there a setting I can change to do it automatically.

Similarly, how do I add/subtract/multiply/divide fractions on it? To make the line between the numerator and the denominator is it just the รท key?

Also, I see that there is an "=" button that doesn't actually solve math problems, like the Enter button does. This leads me to believe I can enter entire equations and have the calculator solve for x. Is this true? And if so, how do I accomplish that?

Finally, will it/how do I get it to do fractional proportions? For example, what buttons would I press to solve this:

x = _ 5

9 4

I apologize for the many stupid questions, thanks in advanced for the help!

]]>

How do I prompt a user to define a variable? i.e. to display the phrase "Enter an integer" and have whatever the user inputs define the variable for the program.

I do have the latest updated version of the operating system.]]>

This is more out of curiosity than anything else. Everything else I've wanted to do I've generally been able to bang through.

Thanks for any help!]]>

One interesting thing about the Nspire is that it will have Ti-83 emulation via a removable keyboard. This means that the Nspire is programmable in this 83 mode, albeit as an 83. There is still no word if the Nspire supports Native Programming, or emulation of other calculators outside of the 83. The CAS calc does not offer emulation, most likely because the CAS software takes up the space that would be used for the 83 emulation, but this is a guess at best.

It also looks like they redesigned the keypad from the original graphics of the Calc I've seen, and have gone with what looks like a solid D-Pad system (similar to the 92) VS the arrow system the prototypes had. This was done to most likely utilize the cabri geometry system more efficiently. Speaking of the geometry, it is a lot more responsive than previous models. on my Ti-92, cabri was very slow, and would take awile to redraw and calculate changes. on the Ti-Nsipre, its almost instantaneous. You can definitely see a speed difference between the two calcs.

Anyway check it out on ti's website.

]]>