What's Kissu's problem solver of choice? Mine is the TI-89, non-Titanium. The Titanium, although it has a slightly faster processor, some graphing fixes (for functions that go to infinity, vertically, such as csc(x) ), more memory, and a GUI home menu, I find that the button layout is far inferior to the TI-89 which has a standard grid layout, whereas the TI-89 Titanium has a button layout where the buttons are set on a curve which makes data entry slower. The buttons also feel worse, which is an interesting feat to accomplish considering the TI-89 has mushy buttons. Unfortunately, my TI-89's screen is giving out. I think internally, there's connections from the display that don't make solid contact anymore, so I had to stick foam pads inside it so that the display would work. Anyways, because the TI-89 is a much more capable graphing calculator than other offerings by Texas Instruments, it also has host to a number more, better games on it, such as ports of Super Mario World, Ultima V, and DOOM.9 posts and 5 image replies omitted. Click reply to view.
Honorable mentions go to the TI-36X Pro, which is an incredibly versatile scientific calculator that is especially helpful because it has a program, with its own button, for solving systems of equations.
I’ve found less and less need for graphing calculators and more and more need for https://www.integral-calculator.com/
It’s been really useful for looking up integral techniques and checking your work, atleast for undergrad physics.
Otherwise I use desmos for graphing curves.
What do people use calculators for nowadays anyways?
But why an expensive calculator over just your PC?
Some people might prefer them instead? Certainly, the most common application is just for use in schools.