The plus-minus sign

[/0]

If you have a TI-89 calculator, type in and brace for epic!!!!!!!!!!!!!!!!!!!!!!!

(This might work on other TIs)

This is the first time I have seen Mr. Calculator use it. The sign is nowhere to be found in CATALOG. Wtf  :uglystupid2:?
And why can't it use when solving quadratics? It would look so much nicer...

[methodsboy]

LOL amazing stuff. (Y)

[methodsboy]

if you want to keep it, just put it into the Y= Editor thing and write it like an equation, then you can just copy and paste it into the home screen when required.

[kurrymuncher]

lol i found the plus minus sign. On the TI 89, just press second, then +. scroll down to math and press that. Now scroll down further to the letter N and theres the plus minus sign.

Or you can just type in {1,-1} infront of an equation and thats the same thing.

[ell]

I get on my Titanium

[methodsboy]

^ should be in Radian mode

[ell]

^ should be in Radian mode

It is in Radian mode - that's how I got the in the first place!

[/0]

isn't undefined?

[ell]

isn't undefined?

http://en.wikipedia.org/wiki/Sign_function