Press 2ND TEST (above MATH). The less than sign should be the fifth option.
Press 2ND TEST (above MATH). Less than or equal to is the 6th option.
The equal sign is the same as the enter button
Use (2nd)(MATH) to access these, and from this menu you have the =,>,<,etc.
The TI-89 is the better calculator. It has more functions than the TI-84, but is also more complex. Each is better for different situations or skill levels with calculators.
Oh, dude, it's like asking if a grilled cheese is better than a peanut butter and jelly sandwich. They both do the same thing - math stuff. The Ti-84 is like the classic choice, you know, like your go-to pair of sweatpants. The Ti-85 is like the hipster version, a bit fancier but does the same job. So, pick whichever one matches your vibe, man.
The TI-84 is a graphing calculater. It is mostly just an update to the TI-83 calculater.
Yes, the TI-84 is allowed during the ACT.
Unfourtunately, it is not possible to expand with the TI-84. Only the TI-89 can expand polynomials.
Sorry, but no, to my knowledge there are no shells for the TI-84=CSE, and there probably will never be, the last descusions about being in 2006, and the TI-84+CSE is not compatible with the old TI-84 or even TI-84+SE programs. I am sorry to say but you will never have complicated games for this edition of the TI calculators but there are some simple games that don't need shells, such as tetris, worms etc:
You can play Ti-84 games with the 84 keypad but I have yet to find games for the n-Spire CAS. So just download TI-84 games and use the 84 keypad.
mram ti 84 sequences
there isn't an infity button on the ti-84 Texas instruments graphic calculator.