I’m trying to take the derivative of a function and have my answer spit back to me in pretty print. This isn’t working, and I even change the mode on the calculator to pretty print and it doesn’t help.
So, i.e., if I want to take the derivative of d(x^2,x) I know I should get 2x as my answer in pretty print, but its giving me 548.49 instead…
Damn that sounds handy. How well does it do implicit differention?
Im taking Calculus 1 at the moment and I’ve been using EasyCalc for PalmOS on my Treo phone to check my stuff. Prof. recommended either a TI-89 or TI-92. Anyone got any reccommendations for one over the other? I’m looking for a calculator that will last me the entire college career, and as an engineer, I will ALWAYS be taking math.
At that level, you could get a TI-92. (you can just type stuff in on the keyboard) the TI-89 doesn’t have a keyboard, but otherwise it’s pretty much the same thing. I use 89 because it’s legal on more tests and competitions.
Implicit differentiation is another thing you can use… if I remember correctly, its something like: impdif(equation, independent, dependent).
If you don’t want to clear all your variables, you can use “delvar x” to delete stuff. Obviously that one deletes x. F4->4
Whenever I think of my 89 I think this: Know in Final Fantasy after you beat a boss and you get some uber overpowered item and the classic final fantasy music start to play? That’s how I felt when I got my 89. Its as if i’m in some super dark cave, then all of a sudden I pull out my 89 and its bright as day! It is seriously that good!
Besides, me and my 89 go way back. I would never have passed Calc 3 without it. It also helped me a lot in Linear Algebra to do matrix equations.
Go with the Classic Ti-89 over the Ti-92. The 92 is huge and wouldt probably land you in trouble if your taking an exam. The 89 is more compact and similar to other Ti calculators such as the -83 variants.