graphing calculator

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BigJ

Lifer
Nov 18, 2001
21,330
1
81
Originally posted by: Xyclone
89, because it's very helpful for calculus. The 83 is only better for the ACT, where the 89 isn't allowed.

Don't fall into relying on the 89 for Calc.

I always tell younger kids not to pick up the 89. Too many people rely on it for homework and other assignments and don't really learn how to do anything by hand. Which royally fvcks them when test-time comes and they dont know sh!t. Most math teachers in college will either not allow you to use any calculator, or restrict it to non-graphing.
 

destrekor

Lifer
Nov 18, 2005
28,799
359
126
um... 89's a nice and all.. but useless is college
you can't use them on tests... my freshman level class (math 148, basically college algebra)... the professor said we can't use anything other than 83 or 84 (probably lower stuff works too)... so an 89 wouldn't even work in that situation.
 

2Xtreme21

Diamond Member
Jun 13, 2004
7,044
0
0
Yup, with a TI-89 you'll rarely be able to use it for tests in college. And if you've relied on using it through high school and doing your homework, come test time, you'll be royally screwed.

I'm perfectly fine with my TI-83+, though I haven't had a single test in college yet that I could use it on.

Edit: Let me specify. I couldn't use them on tests because most of the tests involved very simple math problems that could be done in your head and/or all the problems were theoretical in nature.
 

slpaulson

Diamond Member
Jun 5, 2000
4,414
14
81
I don't know why you'd think an 89 is hard to use. I find it much easier than my old 83+.

I've never had an exam where I could use an 83 but not an 89. Then again I was never allowed to use a calculator for a math class in college.
 

bunnyfubbles

Lifer
Sep 3, 2001
12,248
3
0
89 is superior in just about every way. The UI is definitely better, although because it can do so much more it might feel more intimidating.

The only major downside I could see to the 89 would be that it makes it too tempting to "cheat" and use it as a short cut, especially for calculus. However if you can discipline yourself and learn how to do the work without it, the 89 really is an invaluable tool.

However it is true that you may run into situations where you'd want a calculator other than the 89, as the 89 is often banned from tests where others are not.
 

duragezic

Lifer
Oct 11, 1999
11,234
4
81
TI89 is definitely better in almost all aspects than a 83+/84. Though I am used to the 83/83+ interface and using a 89 effectively would take a little bit to get used to, but it's certainly more powerful.

However, I did just fine with the 83+ since I got it in 9th grade and now I'm in my 4th year of college. My freshman year I had Calc 1/Calc 2 which though you could use an 89 in, if you didn't understand the Calc you would never pass the tests. Got A's in both of those. Then in my 2nd year I had Linear Alg and Differential Eqns. Got a B and A in those, respectively. My 83+ was adequate for Linear Systems and Signals, Circuits, as well as other classes so far.

So really, not having a 89 makes you actually learn the math. I can't believe some of the simple Algebra techniques I barely knew when it came to some college courses, but with 20 minutes of practice and I could do it fine.

So I guess with the fairly small $ difference, the TI89 would ensure you have an adequate calculator for your whole college career. But honestly unless you are in Engineering or Science majors, a 84 would do just about everything required, and even then my 83+ still works good enough for me. Plus if you only have a 89, what about tests that don't allow it? None of my college courses ever restricted it (except QWERTY ones), but seems that people say they often can be not allowed, so you don't want to be stuck without a calculator.
 

So

Lifer
Jul 2, 2001
25,923
17
81
Yeah, IMO, the 89 is a crutch. I have one now, since I need the speed and have the understanding, but if I had it when I was learning calc, I wouldn't have learned jack.
 

daniel1113

Diamond Member
Jun 6, 2003
6,448
0
0
Originally posted by: destrekor
um... 89's a nice and all.. but useless is college
you can't use them on tests... my freshman level class (math 148, basically college algebra)... the professor said we can't use anything other than 83 or 84 (probably lower stuff works too)... so an 89 wouldn't even work in that situation.

I've used my 89 on every exam I've ever had in college that required a calculator.
 

jmcoreymv

Diamond Member
Oct 9, 1999
4,264
0
0
For those of you saying that you couldn't use the 89 in college, it depends on your school and your classes. At my school, we couldn't use them for any of the math classes, but for all the engineering classes, it was fair game, and the 89 helped a lot, especially when you were in a time crunch.
 

daniel1113

Diamond Member
Jun 6, 2003
6,448
0
0
Originally posted by: teatime0315
Originally posted by: Oblivionaire
Ti-92 FTW.


OMG lol a 92 dammit .. i didnt even know they went that high
Better start researching

Don't worry. It's identical to the 89, except it has a keyboard. And, it's about as geeky of a calculator you can get.
 

Oblivionaire

Senior member
Jul 29, 2006
253
0
0
Originally posted by: daniel1113
Originally posted by: teatime0315
Originally posted by: Oblivionaire
Ti-92 FTW.


OMG lol a 92 dammit .. i didnt even know they went that high
Better start researching

Don't worry. It's identical to the 89, except it has a keyboard. And, it's about as geeky of a calculator you can get.

Does the 89 do derivation and integration?
 

acegazda

Platinum Member
May 14, 2006
2,689
1
0
yes it does that... and pretty much anything you can think of. That all comes pre-loaded. If you get the USB connector (which I got for free) you can download all the apps that you get with the ti-89. I have a ti-83 plus, and I'm hoping it will last me through high school and college. Personally, I don't see the need for more, even if you need some science and data manipulation programs, you can download those.
 

keeleysam

Diamond Member
Feb 8, 2005
8,131
0
0
Originally posted by: daniel1113
Originally posted by: teatime0315
Originally posted by: Oblivionaire
Ti-92 FTW.


OMG lol a 92 dammit .. i didnt even know they went that high
Better start researching

Don't worry. It's identical to the 89, except it has a keyboard. And, it's about as geeky of a calculator you can get.
I'm going to have to say that the Voyage 200 is.

 

hans030390

Diamond Member
Feb 3, 2005
7,326
2
76
I have a TI-89...I've used pretty much every other model. Trust me, it can do soooo much more, and the interface is a lot nicer. It's extremely easy to use, and for college level classes, you'll want what it offers.

Plus it solves equations. That alone helps me a lot in Alg 2/Calculus.
 

So

Lifer
Jul 2, 2001
25,923
17
81
Originally posted by: jmcoreymv
For those of you saying that you couldn't use the 89 in college, it depends on your school and your classes. At my school, we couldn't use them for any of the math classes, but for all the engineering classes, it was fair game, and the 89 helped a lot, especially when you were in a time crunch.

I agree, an 89 helps in a time crunch, but for someone going in to algebra 2, it's going to be more of a dangerous crutch than anything else.
 

JustAnAverageGuy

Diamond Member
Aug 1, 2003
9,057
0
76
A Ti-89 is overkill for Algebra II. I agree with So, it's a dangerous crutch if you don't learn the concepts.

/used a Casio fx-115ms all through PreCalc (~$20 at staples)
//got along just fine
/// realized he didn't need to work his ass off after buying an 89ti
//// actually learned the concepts

- JaAG
 

daniel1113

Diamond Member
Jun 6, 2003
6,448
0
0
Originally posted by: JustAnAverageGuy
A Ti-89 is overkill for Algebra II. I agree with So, it's a dangerous crutch if you don't learn the concepts.
- JaAG

I agree. Once you are done with calculus II or so, then I think it's a great tool.